Elitist in a video game = Loser in real-life who needs video-game accomplishments to feel superior to others since he/she has major inferiority complex in real-life due to lack of success/self-esteem/etc.
Perhaps this definition is a bit generalized but I would bet good money it applies to 90% of the "elitists" in this game. Anyone who posts stuff like "don't embarrass yourself" or "I'll kick scrubs..." etc. in their PF posts probably has faced embarrassment and/or rejection in real-life and are looking for ways to compensate via their "status" in a video game.