Dimitrenko has a very weak chin. Not as bad as Price's, but somewhere in the ballpark. Jennings is featherfisted by HW standards, but he dropped and stopped Dimitrenko.
In his defense he was fighting the smaller man and trying to land bombs. By round 5 he was spent on energy and getting hit by anything when you are 6'6" 280 pounds and tired as hell, will drop you. King of kings at Heavyweight. I promise if you went to a random gym and agreed to a sparring match with a stranger and tried knocking his head off for 15 minutes with all of your might, you would be done by minute 16.
Price should fight him. Would be a good crossroads match up. Ironic Price had Povetkin down, and Dimitrenko had Jennings down.
Jennings power is a bit underrated. He is no 1 punch KO artist but he has enough in him to break guys down.
I believe he has a degree in law from the University of Hamburg. He's probably one of the best educated boxers around at the moment. Nice example though of a smart guy who just doesn't cut it inside the ring.