PvP sharding

Every single time I’m in Naz or an assault and there is a PvP event, a mothering load of alliance descends upon us from other shards. I’m talking the same gdamn raids groups, all at once. FIX SHARDING. Horde can’t do fall anywhere ever because, even on a horde server, alliance outnumbers us 20 to 1 when the shards collapse. LIMIT the number of arsehats who can shard over all at once. I mean, seriously? 40 people sharding over in the same spot within 1 second? I’m talking about winning an event by 800 to 200 and 20 seconds later, we lose 1500 to 800. It’s obnoxious and complete crap! Why the hell is there sharding during pvp events anyway?