HaloCharts.com just launched a new toy aimed at analyzing your play style when weighed against other players. There's numbers and stuff. Here's what they had to say about it in their own word:
"Put in a gamertag and it will analyze a bunch of stuff and give you color coded indicators of where you are above or below average the most, to give you an idea of things you can improve in."
Halo: Reach Player Analyzer