Small dogs are better athletes ... small dogs require less food ... and small dogs are better in just about every way IMO.

It's like boxing; check out the punches-per-round statistics of smaller fighters (middleweight on down) and the heavier weights are a joke by comparison.

Also, consider overall athleticism: how many 220lb human gymnasts do you see? Not many.
Yeah, the big guys are stronger, yeah they can be athletic too and play football, etc., but NO WAY are they as athletic as a gymnast or circus acrobat

Well, it's the same with big dogs vs. little dogs ...

Yeah, big dogs are stronger overall (not pound-for-pound), and yeah some of the bigger dogs are athletic too "for their weight" ... BUT!

There is no way in hell that they can pull off some of the fast, slick athletic moves of the smaller dogs ... OR fight at the same pace ... it's just not going to happen.

For the same reason it doesn't happen in human fighters.

There is a certain "body-to-world" reality that, if you get passed a certain size, you just can't do "certain things" anymore.

And no 220 lb man is going to be a gymnast ... and no 55 lb dog is going to have the moves of a 36lber either.

That's just the facts of life ...

Jack