Found a good way to boost your score without hacking. Get a friend, join seperatly. If your on either teams, meet in an area where people dont normaly go; initial spawn points are normaly pretty deserted. Then, just starting damaging each other, but don't kill. Heal, then rinse and repeat. You can get 70+ points easily with a win. Even better if you get a healer with each, they get loads of points aswell, and it means you can attack non stop throughout the battle.
Obviously though, only 1 gets to win, the other will still gain max points for loss though, all evens out in the end though.