The racials are the reason why Orcs are beloved in the PVP. Aren’t there several charts showing them being the dominant race on the Horde-side?
I don’t recall them wiping out, the main focus point is one single NPC who despised them. But given that 20 Void Elves makes a whole playable race, the 200-1000 High Elves should also have been much earlier playable for the Alliance.