I can't quote that, but your understanding is mostly based on video game balance.
It isn't helped by the fact that even GW doesn't know if marine armour is ceramite only, or ceramite and adamantium, or ceramite and X.
Ceramite is a non metallic substance that is mostly impenetrable to energy weapons.
Reading material:
Lore wise marines aren't just fast, but can shoot/dodge in microseconds. Not milliseconds, and headshot in the kilometer range without sniping. They don't need jetpacks to be more mobile than most enemies save eldar. If I match your autism, that means at low end 999 microseconds, which is 0.999 millisecond, 0,1% of a second. While this speed was replicated by an Old Republic Jedi once, he could only do Force Speed this fast for a limited time.
If Dark troopers had this, they would have smeared any human opponent who isn't a skilled Jedi.
This is often a problem for video games. Gaunt or Trooper of Havoc Squad can melt through Chaos marines / Sith like its a fish in the barrel situation, because that's just video games. At least Serious Sam doesn't take itself seriously.
The autism in you makes you take the maximum EU values against the stupidest of 40k lowballs, but that is because you are autistic. This applies to both franchises and is a result of slop writers not getting physics or scale.
Also how would a human like Kyle Katarn be able to kill multiple Dark Troopers? If their plasma cannons are anything like a 40k plasma gun, a single shot would kill anything even if it is a near miss.
Your entire understanding of the franchise is superficial, gleaned from memes, youtube poop and vidya.
Most Starships can destroy all life on a planet. ISD, Kirk's Enterprise, a 40k ship with sustained bombardment. In fact the Enterprise scored the best there, as it could somehow stun an entire planet of gangsters all at once, despite phasers being linear and unable to bend around the planet.
There was also the Star Trek explosive that could destroy planets, but fit in a vial. It was forgotten by writers and never used after TOS. It looked like rainbow coloured dust.
You are just driven by retarded America Exceptionalism and milsim autism, a lot like Razorfist. Yet your worldview is 20th century only.
CIS having tens of millions of planets and the Galactic Empire having a million planets does not scale. It is similar to a 40k error that lists the Imperium at a billion planets in the Beast war series, instead of a million.
Now non autists realise the writer just mistook the number or didn't do research. It is common in shared universe fiction.
Otherwise you got to wonder, where did that millions of CIS or Imperium planets go? Secede? Get exterminated? That would be an event like the US getting hit with a meteor and only retaining one state, it would be mentioned elsewhere.
This ties into weapons batteries, which can go from 6 joules to petatons easy. They can go from a kid's punch to dinosaur ending meteor levels. It can go from flattening a bunker WW2 style to piercing the crust in one go. This is a lack of quality control.
This just results in autists on spacebattle.net and similar sites arguing whenever a macrocannon with giga-tonnes warhead means its yield or weight is a thousand tonnes. So a few gigatonnes of tnt equivalent or a few thousand tonnes as the shells weight, which makes for a much bigger kinetic impact.
Ship speeds at 0.5 light speed are universal, so the macrocannon yield jumps up and down from gigatonnes to petatons easily. It can't fire slower than the target its trying to hit is travelling.
This was likely a FFG writer not even knowing what giga means, nor realising how unclear he was, and people use this for autistic calculations when the same book has imperial ships at densities at which they could float on water like a WW2 ship. A sea ship.
This also comes to town on Star Wars, is the Clone army 3.5 millions or 3.5 million brigades? If we look at it from autistic realism, 3.5 million soldiers is way too low, something Earth could match in manpower. If we look at it from how the Clone Wars cartoon depicts it, 3.5 million soldiers is fine.
Coruscant has alone 100 trillion or 1 trillion people, they could recruit 3.5 million easily. That's only their biggest planet, there is a million more. If each planet conscripts 3 and a half men, they could do the same as the Kaminoans.
Because Dave Woooooof Filoni thinks 10 tanks and a thousand droids are a world conquering force, because he never, ever read a single military history campaign. Closest he came was a cowboy film.
Now this is just writer autism, but your autism makes you pick up the largest number from one pool, and the smallest from the other pool, because warhammer not following 20th century war tactics makes you angry.
Me being smarter, I generally look at effects and see how those scale up.
This goes from ISD getting planet killing capability to them being unable to efficiently bomb a rebel Hoth base, or Asoka and her buddies.
This is another stupid writer scenario. If a ship, be it the ISD Bombardeer or the Dauntless Orbital Purgation, can never simply destroy shields it could just boil the entire area.
Any competent scifi writer would just have the ship blast the planet until the crust melts and the enemy base is swallowed into the molten mantle, shield or no shield.
But those don't work for tv/board game franchises, those get the second and third rate choices. Both Star Wars, 40k and others go down the quality nose dive faster than Balldo's viewers.
Population numbers are an easy error.
Terra or Coruscant are hyper overpopulated, while other planets have less people than New York or a middle ages European Kingdom, yer can field armies to challenge an invasion by a space faring civilisation.
No Frank Herbert or Larry Niven or Clark Ashton Smith or Hal Clement and such for franchises. Not even an Asimov.
I am trying to educate you, because you got the tism. When in fact it is just stupid, underpaid and uneducated writers typing whatever slop they think is acceptable.
A film example, the Stormtroopers in Cloud city (EP5) can blast chubks out of the wall, yet Leia on Endor survives a bladter to the shoulder (EP6).
This also happens to Star Trek. A phaser can melt a car sized boulder, yet a plant pot can be used as cover against the phaser.
Or anytime 40k uses foliage as cover against any gun. A tree wouldn't stop any sci-fi weapon unless it is an unobtainium bark tree.
Anime just does it shamelessly, it doesn't even care. The 50 kg girl will drop kick the tank into a wall. She will also flash her panties while doing so. Physics are baka.
Which was that shooter game that had bullets fire with the casing again? Made by Californians who never saw a gun and just googled bullet.