Hmmm okay well what everyone says makes perfect sense. My thoughts were I doubt he thinks I'm folding after calling the turn and so I thought his range would be beating me. If I were to back 4 bet I think that 88 is entirely way too little I think like 120 would be much more appropriate. Although since I am coming from a full ring background I am a little weary of getting this in 200 deep. I find it difficult to believe that he would 5b bluff jam 200 deep with a worse hand. I suppose that you just make so much money the times he folds and if he shoves you probably have equity to call even vs like AKs, QQ+.