I play Crucible/IB strictly solo and have a running 1.11/1.18 K/D and a 1.64/1.74 K+A/D. Those are fine, but because I strictly play Control (with occasional other modes to get Marks) it is the Zone control stats that matter. I am currently top 2% in zones controlled and top 1% in zones neutralized. I am also top 3% in assists/game and top 5% in assists over all characters. In the end those numbers mean next to nothing. I play for fun and always have my characters maxed in IB before Friday. If your game life revolves around your K/D then you should really rethink your life.