Having completed no thorough analysis comparing the two, I suspect if I did, I'd have ODLH edging it, but it'd be close.
Interesting. Without much confidence, my guess is it will be close, but ODLH will attract slightly more votes. I've voted "flip a coin", so my vote won't influence it.
Were does ODLH fit on your Welterweight list or any the divisions he competed in? I know you have Holmes as 3rd for heavyweights but I suspect you see Welterweight and the others as a deeper division were it's harder to rank highly which balances it out.
He doesn’t make my top 20, but I only factor in fights contested at WW. Holmes contested every career fight at HW, ODLH spread himself thing across multiple weight divisions. For whatever it's worth, in Rummy's sticky p4p by decade thread, I had Holmes #14 in the 1970's and #11 in the 80's, ODLH #3 in the 90's, in each instance only factoring in fights contested in the respective decades.
I've gone Oscar insofar as I didn't want to call a 10-10 round. Oscar dared to be great a bit more than Larry. He dared to turn pro earlier, dared to face world class fighters earlier, dared to keep seeking to fight the best in his own division or added weight to fight the top guys higher up in weight. In comparison, Larry was less daring and less inclined to demand to face the best.
HWs who didn't start at a lower weight class don't really belong in P4P. But if you're just rating who was more dominant at their respective weight classes probably got to be Holmes. Holmes is a greater HW then De La Hoya is a 140/147/154/160. De La Hoya(I think) has the distinction of being the tallest fighter ever to get stopped by a 112 pound champion. While Roy Jones and Toney were breaking glass ceilings De La Hoya was exploring the basement. In pretty much every big fight ODL had except Hopkins he had the size advantage. And once he got to the big 147s he started struggling. Of course you can counter and say these were the best eras of De La Hoyas respective weight classes and in an easier era he would have dominated.
Oscar is greater than Holmes due to being world level and elite in numerous divisions and he has a stacked resume but if you're just using welterweight Oscar Holmes would rank higher
Holmes. He dominated for a long time and he is rated very highly on most all time heavyweight lists. Oscar is simply not.