1-3. I...what? Okay, I want to face-shank people now. See how they like face disfigurement. Except with the shanking, they won't really live long enough to understand it. Pity.

4. McKay smarter than Sam? *laughs hysterically* Oh please. Not even in alternate universes. Sam also has a key ability that McKay lacks: common sense. See also: Trinity.