I think this debate has gone off topic. And to compare weight divisions of human boxers to that of animal athletes is really pointless.

The athletic ability between the two doesn't match up....not p4p and damn sure not in the gameness department.

Smaller dogs tend to be classified as more game, because #1, there are more that compete there, and #2 because like NQ stated, more go the distance.

I don't think size has anything to do with gameness. I think it does play a role in the ability department, and it does p4p as well, maybe not 100% of the time. There will always be the exception.

I'll give an example of Pit Bulls pulling weight. Many years ago I competed in weight pull. I had a 40 lb female and a 61 lb male. My female would pull 100x her body weight consistently everytime, and sometimes more. The male would average 84% most times, but occasionally he'd pull more.

She was game bred he wasn't, but I think that would be a good measure of these dogs p4p if things were equaled, such as dogs being used being game bred and the stats being drawn from the exact same track.