When I said Floyd was possibly the best I've seen, I meant from my era of boxing, not all time. I think that us what the OP meant too.

Was he better than the all time greats? We'll never really know. Even if he wasn't actually better than them in skills, strength and speed, you still wouldn't be surprised if he actually won the imaginary dream fights, the guy just wins fights, his adaptability is one of his biggest strengths.