Nope.
Horde is more represented than Alliance yes, but the lead would be around 5%.
Considering the most played Horde race is more than double the next race and you want that race on the other faction?
If you add up the % of Orcs, Trolls and Undead at 120 it still falls short of Blood Elves rep at 17.9%.
There are more Humans/Night elves than Orcs, Trolls, Undead and Tauren.