Weak troll, bro; any server that might have "ELO" implemented as you claim has most likely done it wrong.
It wouldn't surprise me to find out that these servers with "ELO" as you claim only check to see if people have gotten kills recently, meaning if a hybrid comes along and kills an edge pker on a hot streak, that probably raises their "elo". Any server that you think you might have seen with an "ELO" system is most likely doing it wrong because they, just like you, don't understand what ELO is or what it represents. (https://en.wikipedia.org/wiki/Elo_rating_system)