One of the things I noticed playing BC2 about a year ago was the guys who seemed to have hit 50 in a hurry. "One" of them had the handle, "bluedevils."
My guess was that, in that case, you had several people (perhaps Duke university students) playing under the same handle at alternative times, so rank, weapons and so on would escalate in a hurry for that one account. It got old getting killed with impunity by these guys who seemed like they'd hit 50 in a few weeks.
If u don't want to do that, you could always hire a player to drum up your numbers, so when you actually sit down to play, you are top of the heap. And if this was some kind of MMO deal, you could do like Chinese prison guards and force incarcerated persons to rack up points for your account killing hogs or whatever