Prime Wills versus the Jack Sharkey that beat the cr*p out of him in1926 when Wills was 34 ,same 15rds distance who wins ? I'm going for Sharkey, he was on a roll, having just beat George Godfrey and won his last 9 fights.
It would have been a far more competitive fight. I'd favour Sharkey still slightly. I agree he was hitting a nice peak in 1925-'27, he won 13 fights in a row before the Dempsey fight.