Player Lock As An Unfair Advantage

I was playing with player lock as the New Jersey Nets on PG (Jason Kidd) and had it on SuperStar (4 stars). Usually I have a tough time winning on this setting and this was my first try playing using player lock. I was facing the Timberwolves and by the end of the first quarter I was up by 15+ points. At halftime nearly 30. The scary thing was that I wasn't playing too great. It's just that the AI was playing horrible. They were hardly attempting shots. I am wondering if EA did this on purpose (make it easy to win on player lock) or if its just a bug/cheat.

I don't think it's a bug or a cheat - rather you are simply able to control one player at all times, hence you can play intelligently without the ball. Your CPU teammates will often stand behind the defenders leading to an interception or forced perimeter shot; with player lock, you can establish better position before receiving the pass.

Additionally, you can't furiously switch players on defense, so you're in a better position to keep an opponent locked up and make a defensive switch if your teammate is beaten.