Nowadays, differences in WOW TBC Gold race are not that important unless you have super min increasing your max to gain a 0.5 percent advantage. It was likely to be referring to the fact that players from alliances are constantly slapped in the face in legends (taking more losses than Horde, and other things).
The majority of the players also horde because that's what majority of the biggest guilds for raiding are (unless you're oceanic which weirdly isn't the case).
Meta > Friends > Lore. You can come up with any excuse you want for the faction you pick The real reason for this is that the players were following the meta, and one faction was superior in PvP. They should have disabled race-based skills for buy Burning Crusade Classic Gold the factions that play PvP prior to the release of the game so that the imbalance wouldn't been as severe.