@RedPhoenixx54 absolutely, you don't always have that choice. And I think we both got a point. i just want to play my favorite load out. But you're right: it's more challenging with a random load out. Still I think it'll be challenging to, if you always have a class with AR, one with MP and so on, but the AR itself is changing from round to round. It's just the style of your gameplay which will get supported.
I played Black Ops and there was a kdr. The deaths are more important than the kills. You can only get 50 kills, when you're not dying 50 times. In that case you already lost the game. You need , in the end of a game, a positive kdr. Only then you are a enrichment for your team.