It's a bit later than I know best, so I could be overlooking someone. I thought Flowers would be a bit on the small side. I'm not really his biggest fan either, he was good, but I'm not sure he was really better than the likes of Gibbons.
Tunneys record speaks for itself. One loss in over 75 professional bouts capping everything off by beating the leading contender for the hwt title (Wills turned down the fight with Tunney), beating the undisputed hwt champion and beating the former champion in a rematch. No matter how you slice it Tunney was the poster boy for the word “winner”.