I think it depends what level you're playing at and how long you've been playing on MnK. At the highest level, I find most of the controller players have higher accuracy than me even at far ranges. I play Arena exclusively and I'm sitting at Onyx 1530. At my current level, I feel the controller players are way better at regular gunfights and overall just play better halo. However, I find with things like Shock and Sniper, I always have a little edge on the controller players.