[Genz]

you can't call this preflop 4bet and then decide not to shove if you have an overpair since that is the best hand you can reasonably expect to have after the flop. And if you think that shoving on the flop will be a losing play against him, don't call the 4bet in the first place. But as others have pointed out, that is certainly not a good play.

OTOH there is a good chance that you will only be called by AA, KK when you shove here. So I like flat calling as long as you don't fold later in the hand (unless an A or K hits. Because than you are probably totally dead).