I also care about what I like to call their "costumes." Certainly, yesterday, the Steelers' costumes were much better than the Ravens costumes. Man, the Ravens looked like they were wearing ladies' leggings. I think you want some color break at the knee, so I was for the Steelers.
I'm all about: How do they look? It's a spectator sport!
(Originally written as a comment, here.)
UPDATE: I'm watching the Seahawks and Bears game right now, and I'm seeing there's a player named Herring on the Seahawks team. That's like having a player named Honey on the Bears team. This reinforces my support for the Bears (this week).
UPDATE 2: The Jets and the Patriots have quite similar costumes. To understand the game, I need to keep trying to remember which team is dark on top and white on bottom and which is the other way around. It's like that "Last Battlefield" episode of "Star Trek" where one guy is white on the left side his face and black on the right side and the other guy is the reverse. To people who aren't intimately connected to the struggle, like Captain Kirk, it just doesn't look different enough to matter. And by the way, that episode of "Star Trek" was bogus as hell unless it's established that these people don't have mirrors. Anyway, I concede that top and bottom are easier to distinguish than right and left, and I also realize the dark color is different for the Jets and the Patriots, but I need more contrast.