Unless you're running with a full fireteam, you're going to get thrown in with a bunch of randoms in I.B., and there are so many who either don't understand the concept of Supremecy or simply don't care if they win. Get a kill and run away to get another kill leaving the crest on the ground, yeah that will get you a win. My suggestion is to add a consolation prize to the losing side, in addition to any drops that might happen. Make it 20 or 50 points towards Iron Banner rep. Not enough to make a huge difference, but enough so that if you happen to get stuck with a losing group, you're at least making progress towards the next rank. That or offer a daily bounty so you at least have the chance to make up some ground. I got stuck at rank 4 and kept getting thrown in with randoms last night, and even when I was leading our team on the scoreboard, we kept losing. And I watched my progress bar sit still match after match.