Yep, those are the main things to look at. Look at your two starting bigs: Pickell (4 bh, 15 pa) turns the ball over about 50% more than Nelson (27 bh, 44 pa) with a comparable # of shots.
Keep in mind that you play uptempo and average 80 ppg. For that sort of pace and # of possessions, I don't think 14 to/game is alot whatsoever. If you adjust it for pace, it's actually quite good.
All in all, I'm not really a huge fan of how the sim handles to's (particularly pg's with super high bh/pa/iq that have barely better than a 1:1 assist-to ratio, but my hope is that is mostly cosmetic), but it's definitely not among the engine's biggest problems, and I definitely don't see anything out-of-whack with it for your squad.