His PSB looks more to me like a hand like 99-QQ that needs protection vs overcards or other draws, but maybe he also does that with some draws though.

If he is a tagg, after your c/r the flop I think he either folds his draws or shoves over with his 12+ outers? Calling seems bad here.

Note that when you c/r you also have a lot of semi-bluffs in your range, so he may figure his best option is to call when he holds an overpair against a range consisting of draws or sets or some other overpairs.