performance and reliability don't really count for much.
i know most of the major clans keep lists with players who persistently perform badly in their battles (i'm talking like 3/20 badly), but as far as performance goes, it's a pretty useless stat from a hiring perspective.
if i'm looking at 2 players, 1 who has a performance of 8, and 1 who has a performance of 6, there's no way to know that the guy with the 8 perf hasn't got it all from spawnraping in flag cap scenarios.