Leonard UD 15 You could make a case for Ross being a better technical fighter, but the margin between those two in that category is very very close even if that were true. In terms of physical attributes (size, speed and strength), the margin isn't nearly as close and all favor Leonard. Ultimately, I think Leonard finds a way to play to his strengths, and carves out a competitive, but clear victory.
Ross absolutely has the skills to get this done, he's just undersized, and probably a bit too slow. Leonard would punish him off the pull, as well. If Ross was a tad bit bigger and had better quick twitches? We'd have a fight. Leonard's speed, power, and chin mix makes him a tough, tough proposition at welterweight.