[LearnedfromTV]

Usually.

a - I expect that flatcalling AQ is more profitable than 3betting any 2.

b - it's nice for him to have to think about two ways he can get owned when raising light.

c (in a way this is a and b combined) - the more we threebet, the less profitable threebetting becomes. If threebetting any 2 is exactly as profitable as flatcalling AQ, but threebetting this time increases the chance he bluff 4bets us next time, that's bad, because it reduces the profitablility of a bluff threebet. Sure, we profit if the next time we threebet we have a real hand, and part of the point of threebet bluffing a lot is to get him to jam into a monster, but since bluffs make up a larger portion of our threebet range than real hands (and a higher percentage than normal because he's raising too light), we're more likely to want him to fold next time we threebet.