Simple really, PvP isn't well balanced. You either play a lot and have the best gear, or you lose to those who have. In HALO, a shotgun was a shotgun and a pistol was the same for you as for everyone else, in Destiny if you aren't a dedicated PvP player, your weapons are significantly worse than a dedicated crucible players. Don't get me wrong PvP people, you earned that loot, and it takes skill to get it and use it well. My point is though, with skill and gear as an advantage, instead of just skill, there's a steeper curve to getting good. Nothing wrong with that, but PvP in destiny isn't an apples to apples sort of skill comparison, and you wouldn't expect casual players to enjoy something like that as much. To be fair, PvE end game loot makes raids easier too, so if I'm better at it then someone who plays PvP more, that's not necessarily a reflection of me being any more skilled then them either.