[quote=Ayoka;811338]Also,...being a "big" guy has nothing to do with being a good trainer

It's about being mature, fair and consistent. QUOTE]
And thankfully, I don't think that. What I do think being a 'big guy' helps in is restraining the dog when he decides the little old lady in the cane would be a good playmate or pulling on the leash. I also think it helps in the perception of the outside world to the breed/owner. "Ah...that guy is big, he can handle that Rott if it decides to lunge on his leash, so I don't feel weird about walking on the same side of the street as he does".
That kind of thing.