Are you sure? Then how come the coach rating in the all-star game is different?
Yes, he is sure and he is correct. All teams have an equal coach.
The ratings for All-Star games use an older presentation model. Here's what the rules
(/BBWeb/rules.aspx?nav=GameEngine) say about it:
"For games older than season 3, the coaching rating is an indicate of the quality of your shot attempts compared to the average quality of the shot attempts you should be able to get with the talent you have on the floor.
"For games played during season 3 and later, we have replaced this with the more comprehensive matchup ratings. The matchup rating represents the number of points that players at a given position would have scored, on average, if they were to take 100 shots."