I agree to a point. However, when you're speaking about an experience the end user has, it IS colored by bias, emotion, and perception. There IS a faction imbalance. I've seen reports of up to 4:1 on some servers. Even if I were outnumbered 4:1 on a server, but logged on with enough friends that it didn't affect me, I would not care.
But in the end, it matters what the player PERCEIVES, not what is reality when it comes to deciding if their play experience is enjoyable and whether or not he or she is to continue that experience.