Epic Games' Rod Fergusson put forth

to the official Gears 2 forums which, if adopted, could change the way the Gears of War 2 rankings work. Currently, they are based on the TrueSkill level system, a complex algorithm that takes into account wins and losses and a whole host of other obscure things. The new system:

What if, instead of skill rank, we instead showed your experience level. You would gain experience through your individual performance in Public multiplayer matches - the higher your score at the end, the more experience you acquire. Of course the experience gained across the different match types would be balanced so you couldn't just grind on the respawning game types to try and level faster. The experience requirements for each level would grow with each level gained (like a typical RPG) and we'd have 99 levels of experience for you to show off your leetness.

Generally speaking your level will always go up since you're always acquiring more score, hence experience, with each completed match. The only exception to that would be people quitting. Players that quit would gain an experience penalty that could cause them to be demoted. At the end of every match you will be able to see how much experience you've gained and how much further you have to go till the next level