Well, it depends on the level of players you are talking here. If we were taking the whole matchmaking into perspective, I would give you a 9/10, because you are better than 90% of matchmaking players. If we are basing this off of a competitive level, than a 6 would be quite nice for you.
Like, I said
If we are talking the majority of matchmaking here, the average player would probably have a 1.0 KD with a 50% W/L in Team Slayer.
If we are talking competitive level here, the average player would have a 1.0 KD with a 50% W/L in the playlist MLG.
If we are taking the whole population into context here, I'm an 8.
[Edited on 07.21.2012 3:02 PM PDT]