The scores per minute dont really mean much as if you spectate it reduces this figure so you might appear much lower than you actually are.
Kill/death ratio is a good if measured over a period of time to determine how good that player is. Obviously number of players on the server and the skill of the players have to be factored in. It's no good going "I died only 3 times and scored 90" when there was only 1 other player there and he was a wookie and you were a sith. See where I am going with this?
Let's also not forget the CB gang and u know who you are, they like nothing better than to use this to the max.
You've got your spawn campers who love to sit there and as soon as u spawn pull you to death. And we have a player with that very name who does this to achieve a high score.
Oh and let's not forget yea olde lag as someone thousands of miles away might be a top player but then they try and compete with a ping of 300 on your turf and they are automatically at a disadvantage. It's no good some of sub 100 or even sub 50 guys taking the rip out of someone who can't move because they are a massive distance away, have a weak connection etc.
So there's a lot of variables to consider. Yes the players mentioned are good there is no getting away from that, well except Draigun and each has there strengths etc.
Regards,
Kren