It would be unusual for a 16/14 to squeeze as a bluff here, then reshove to isolate when he gets 4bet. I think you've got to give him credit for a hand.

It's an interesting spot, I'm folding.

I'm also taking notes on MP, as this flat-then-4bet line can be one of two things from a fish - something really wierd like QJo or 66 that gets frustrated and rage-shoves, or it can be the stone nizzles.