I don't think K/D matters that much in this game, I mean the game doesn't even have a ranked systen, so I think it's safe to say this game isn't that competitive. I for one plan on buying AW, because COD is quite competitive and I like that. The main reason I bought Destiny was because the game looked fun in a PVE way, it's like Activision: 2 new games, Destiny being more PVE and upcoming AW being more PVP, and I like to consider myself quite competitive so gonna buy AW as well.