Anybody read Roar of The Crowd? Embellished in his favour or not, Corbett's account of his fight with Jackson is compelling stuff. If accurate, Corbett's ability to assess his opponent's style and then modify his own to best advantage, all during the heat of battle, was really something else.
Without checking, I think Corbett actually weighed around 180-185 to Jackson's 210. Could be wrong though.