Here's where I can give Iverson the benefit of the doubt: When he was benched in Detroit, he was the better overall player. No matter how fit plays into it, NO player is gonna respond well to coming off the bench behind a player he's better than.
AI has pretty much always been the best player on his team, so his ego is expected. While I would obviously lean towards him not getting along with a team full of players better than him, I wouldn't say that's fact.
What does the guard lineup look like? (Boston is it?)