You only need 18% equity to call on the turn so I think a fold is too nitty. Why do you think "he never has a flushdraw" here? He wouldn't be shoving it? I agree he probably never has a random JTs flushdraw or something but a combo or at least Ax suited that floated is possible. He sometimes will be shoving this turn with KQ, QJ as well. I agree you are usually behind here but most of the money is already in the pot so you can't fold anymore.