You would have to play a LOT and if you are playing 12 days + of game time to reach 10th prestige and that is being coservative, it is impossible to suck. You have played enough to know the ins and outs, tactics, etc. Sure there will be exceptions to that rule but you will be hard pressed to find a shitty player that got to 10th by playing legit.
On the other hand, if you are sitting in a corner shooting your buddy in the face getting all sorts of challenges, perks, killstreaks in EVERY game you play. It will take no time to get to tenth and when you get there you are going to be as good as a begginer that hasnt even hit 1st prestige.