I typed that knowing somebody would have issues with it so it's cool. Never did I say he was the best. In my disclaimer, I said I'm not a huge boxing fan (not that I don't like it) but I just don't watch it a lot. In terms of who I've watched, the number is limited. So this is all based off of my observation (hence "I") But we all know that the guy is very talented.
The problem is, my observation prob doesn't have a lot of weight with it. But to suggest he's not what I say he is because of his opponent, is limited. If floyd mayweather beat an unranked guy...would we then say oh his opponent sucks so he's no good? No. What we do know is that Loma is good and there's a reason he's ranked so high. By not facing top tier competition, you can't say for sure he's the best in the game...but based off of what i've seen I can say he's certainly in the conversation.