Lacy. Lacy completed his amateur career with a record of 209 wins, 12 losses. You can't do that without some decent skills. He was just another guy like Wilder, who had incredible power and a team that failed to shore up his boxing weaknesses and instead maximized his strength, which was the left hook. At five foot nine/ten he was also a little short for the supermiddle weight division in my opinion.
Is this even a serious question? It should be so obvious, even stevie wonder can see who the better boxer is!
Neither? Look, both have massive flaws. Curious thing about Lacy, to me, is that he just couldn’t do anything after the Calzaghe loss. I think he stopped one opponent in his last 11 fights - he was completely destroyed in every conceivable way. I get the impression that if Wilder carries on, he won’t be unable to pull the trigger going forward.
Lacy wasn't quite the one-dimensional joke he became known as post-Calzaghe, but nor obviously was he the flawless well-rounded beast some thought he was pre-Calzaghe. He was at least in the average range of boxing skill (by world championship standard) - a bar that Wilder falls well short of meeting. That said, Wilder's power is considerably beyond Lacy's - p4p even, not just straight-up. The only exception would be maybe left hook for left hook, Lacy's was superior, but that's a weapon that Wilder barely ever uses anyway...plus Jeff's hook was no match for Wilder's right, even if the former was thrown with more textbook form and the latter is a deadly windmill.