Attempted to post a long reply to this yesterday but it went off into the bozone layer or something.
Anyway, your tastes are bizarre in some cases... a lot of amateurish and really dated kitschy design getting high marks (the Colts' horseshoe???), and a lot of pretty slick forward looking work conveying power and motion got the short end of your stick (I personally like the Denver "cyberhorse.") I think we might have a generational difference in perception -- and I'm in my FORTIES!
I too have to take exception to your high marks for Tennessee's flaming thumbtack. The logo's not only terrible, but because it's in professional use, somewhere there's a piece of lined notebook paper not featuring this design as a margin doodle in a 4th grade math class, where it belongs. The brilliant idea of italicizing the letters J-E-T-S with a line under them similarly leaves me underwhelmed, but I find it interesting that you panned the very conceptually similar G-I-A-N-T-S look.
In short you seem to have a weakness for simple, lighter colors with white complements (you like the old Rams' helmets, for instance, along with the Colts and the Jets, nothing darker than mid-value blues and greens, thanks) and -- I think -- dislike darker schemes and complex colors
Come over to the Dark Side, OEP. There's a whole new century coming, and these looks won't be in again until our greatgrandchildren are having this debate, and London beats Yokahama in the expanded NFL's Super Bowl CXII.
Respectfully,
PFnV