Go with Chuvalo. I sure do not think Cooper liked body punches 1 iota. And that's about all George threw. And Chuvalo isn't being bothered much by Cooper's punches either. Big advantage to George in the conditioning department & especially so the second half of the fight
Chuvalo on workrate and bodywork Chuvalo has always taken me as one of the more underrated contenders.
I think that Chuvalo would stop Cooper. He was more active and far more durable than Bert. Cooper was tough and dangerous puncher but he lost most of his famous fights by stoppage.
On their best nights respectively I dont see Chuvalo stopping him. There were night Cooper wasn't fit mentally or physically. On those night he may force Bert to call it in
George,he takes a hiding early but,as Cooper begins to gas comes on with a body attack that leaves Cooper smokeless.
Chuvalo by 9th round Kayo. Can't see Bert hurting George with anything he threw, and as the rounds go on, Chuvalo wears Cooper down for that kayo.