In the "Art of War" Sun Tzu states "Every battle is won or lost before it's ever fought." That's also true of drunken stranger fights. It's all about intimidating your opponent. Whoever comes off as the more crazy/dangerous will win one of these encounters 99 times out of 100. And in this particular stare down, clean cut college kid has no chance of out crazying a guy with eight months of beard and hair and a Hard Rock Cafe London jacket on. The insane homeless look makes you the Alpha Male in an arena fight, the human equivalent of having the bigger antlers or longer fangs or most colorful feathers or something. Clean cut Canucks fan was dead even before the beer hit him. Then all he could do was take it.