I don't expect TJ to go for 30 on back-to-back nights, but I think he'll have a more diverse scoring attack, and he's a better athlete. I haven't been very impressed with Emery's defense, though in fairness, he's an RM freshman. I expect he'll improve on that end, as he's competitive and has a good basketball IQ.
If healthy, I think TJ will fill out the stat sheet and make an immediate splash offensively.