A map showing Horde advantages over Alliance in AV

Sure.
And you win by killing npcs.

Horde having faster access to the alliance base pretty much force ally to act like it is a race. Because for alliance, it is a race.
And alliance just to get in IBGY gotta kill horde respawns for over 5 times, horde? 1 or 2 if they want to rush it. But they just keeping gy ganking it.