I'd agree with this. Villain hasn't shown sufficient aggression to make you (or me at least) think you are beat. With pocket AA I assume I have the best hand unless I'm convinced otherwise. I still like the raise for the turn, but if you just call you are not in too bad a shape for the river. If villain value bets it with a better hand, I usually pay it off. I find that a lot of times villain will check the river, kinda giving up on the hand, and in that case you could throw in a value bet yourself or just check down if you are still iffy.