I don't think we mean any insult to the tiny tots.  But I'm gonna guess that we who have teapots like to play more rough with our pups than we can with the little sweeties.  
I love them all though.  Some one said that when they are little pups they look just like a rottie (which I think is a sweet sweet dog) & a dobie....do you think THAT'S where they got their attitudes from?