That's a testament to how bad a lot of calzaghe opponents were. 21 KOs in 40 fights is not a puncher.

And my logic is fine, if someone is knocked down 6 times in their career and someone else knocked down 1 time then the person who was knocked down 1 time is tougher

Only when you consider that the person knocked down 1 time fought much tougher guys with better punches.

Bute
Johnson
Abraham
Kessler twice.

Once again Ross opens his mouth and let's his belly rumble.