I've only come across GameDude.
''Lousy reviewing'' could be best summarised in any one of GameDude's ''reviews''.
* Nit-picking any negatives
* Exaggeration
* Intentionally (and obviously) trying to make a game look bad.
* Vagueness. While too much elaboration can be monotonous it helps to get more than one sentence out regarding an aspect of the game you're discussing.
''Imitation is the sincerest form of flattery'', but that flattery doesn't necessarily warrant a good imitation. I don't watch AVGN, but I watch the Nostalgia Critic from time to time, and much of the time his reviews are good and rational all while conforming to his character.