The reason Chuck got KO'd so many times was by leaving his hands down and running right into shots. That's the same reason Wandy got KO'd against Leben and Rampage. That doesn't mean he has a bad chin. He just has to fight smarter, which he has done these past 3 fights. As long as he keeps fighting patiently and only does his crazy punching barrages selectively, he should keep at least doing as well as he has been.

Look at Chucks 4 major knockouts. Led with a body shot against Rampage, exited range with hands down, got caught. Against Rashad, started a combo with an uppercut, other hand was by his waist, got caught. Against Shogun, backed straight up with hands down, got caught. Against Franklin, charged straight in throwing wild shots, got caught with a short counter that wasn't even that hard and got put out cold.

IMO Wandy is holding up better for his age than Chuck was, and his defense is a bit more sound...