How good was Mike McCallum?

[roberto duran legend]

I heard McCallum used to be able to counter Hearns's jab in sparring with those famous body shots, he also beat a poor man's Hearns in Milton McCrory. I think he'd be too tough for Hearns in the end, i also think he'd beat Duran who was too up and down above Lightweight.

Hagler/McCallum would be a close one too hard for me to call, i think Leonard would beat McCallum though. And my reason's are because a prime McCallum lost handily to Sumbu Kalmabay who used movement and a good jab to beat him, i think Leonard has similar qualties and does those things a bit better than Kalambay.

Leonard done things a bit better than Kalambay, are you fucking serious