Sergio is not a great defensive fighter. His elusiveness emanates from his footwork, but when he's in the pocket, he's not especially difficult to hit. Floyd, love him or hate him, is a great defensive fighter. Why? Simple: he can make you miss in space or in a phone booth.
Leonard didn't easily beat Hagler. In fact I don't even think Leonard beat Hagler. Hagler was frustrated but he still hit Leonard with some big punches that Martinez wouldn't be able to take over 15. Leonard never hurt Hagler the way Hagler consistently hurt him. So that's an easy win now? What the hell is a tough win then? Bull****.