Sumbu Kalambay had more defensive and pure boxing chops than Toney or Hopkins.Educated movement, every upperbody evasive manoeuvre in the book at all ranges and a top-notch glove\arm block and parry defence. Most footage of the pre-mid20s(roughly) greats is pretty disappointing and inconclusive as to how good they were.I don't dismiss them because of that though. I won't be disingenuous and pretend to have the definitive viewpoint\be the curator of all knowledge on fighters of whom there is such limited footage available of(and who usually had long careers to boot), even if do have a liking towards a certain fighter.Too many "historians" fall into this trap just because they've done a fair bit of research on a fighter imo.Get it through yer head that it is absolutely no substitute for watching someone fight often.
Definitely than Hopkins, and I'd agree about Toney as well. Question is if who, if any, outdoes Kalambay in this regard.
At middleweight? i wouldn't say anyone "outdoes" him clearly in those respects.He was basically a middleweight Canto in terms of winning with pure refined technique, but without the physical disadvantages relative to weightclass and long reign against softer opp.