I actually think Norris has a good chance at beating prime Leonard, he was one of the few to match Leonard in speed and work rate, he also had a lot more power in his punches and when focused had insane boxing skills. I think it would be a great back and forth fight, who takes it?
Norris is one of my 5 favorite fighters of all time, and he was a great fighter, but I think a prime Leonard is a step too far. I agree in that I think Norris matches up better against SRL than some other greats for the most part, but prime for prime I just don't see Norris having something for Leonard that Leonard just doesn't have an answer for.