I was a 4 year starter - division 1 middie in the 80's. 6 foot 195 lbs. clocked at 4.6 or faster on a regular basis. I was considered a big,fast middie. Now it definately seems all middies have those stats. It's just evolution of the sport. Even though its not "football" I think that the size helps in simple things like boxing out for a ground ball. As far as going to the cage, its all about physics, if 2 middies have the same speed, and similar stick skills but one weighs 150 lbs and one weighs 200 lbs, I'll put my money on the bigger kid. In boxing, they always say a great big man will beat a great little man.