This was after a day of playing this week
currently my weekly score per minute is hovering around 370 with a 3.10 kdr thats with 4000 kills in tdm :s
In my opinion score per minute(with a decent kdr) definitely equals better players. You can't get 300+ score per minute sitting in corners or playing defensive. You have to run around and constantly be getting kills. And if you have a good kd that means you're running around getting a lot of kills and not dying. That alone differentiates good players from noobs. Noobs will try to rush and get owned or break even.