Chuck was a great champion, no doubt about that. But throughout his whole career people always billed him as such a deadly striker - but I can't think of a single fight where he truly knocked someone out cold with one punch. He got a flash KO against Babalu with a headkick, but other than that I'm pretty sure all of his "KO" wins were via several consecutive punches rather than a single blow. Not to say he wasn't a good striker - obviously he was a great striker - I just think his true power was a little oversold.
In this match I think Jones takes it. He wouldn't need to take it to the ground - He could stay outside working his jab, odd angles, and unorthodox kicks and Chuck would never be able to find him. Chuck did best against guys who got in close and tried to rough him around. His ability to counter so effectively is what made him such a tough opponent for anyone, and I don't think Jones would ever be in Chuck's range long enough for him to develop any effective counter attack.