Well I ended up folding because it seemed too much like QQ or JJ. I mean with my big rerase preflop and strong flop bet I made it VERY obvious that I had AA or KK (if villian has a brain), and by him check-raising all in, he clearly was sending the message that he could beat my overpair. He later told me that he had Kd Qd, so I think I was actually behind since he had so many outs to improve.