I really can't decide. Is it:
1. The player speed problem? the way CPU players on fastbreaks are WAAAY faster than yours, but can keep up with your fastest players when you attempt to outrun them with your fastest player?
2. The CPU's "Sticky Hands" players that intercept any pass, even when it is coming from behind them?
3. Those infuriating cutscenes that you can't avoid?
4. The "I'll dunk over your guy from a standing position as if he wasn't there" thing that CPU players are doing every now and then when they post up your players?
5. Shooting 3's 10 times in a row, getting blocked 9 times in a row...
I'll probably think of more later, just needed to vent some steam.