PvPers will always go for the "forced" traffic locations. WG portal, Icecrown Citadel entrance, Frozen Halls entrance, Dark Portal, Thrallmar & Honor Hold, Borean Tundra. Or they go for common quest hubs: Few mentioned above, Nagrand and Zul'Drak arenas, Stranglethorn Vale, Tanaris, Un'goro, Sholazar Basin, K3, Barrens, Wintergrasp.
Why go chasing for one or two people in a galaxy far, far away, when you can pick a spot where they walk right into your arms.
It's easy to gank teleport locations as they are out in the open, and the gankers will have the drop on the player who clicked that portal. wPvP instigators don't really care about fairness to be honest. They only care about disruption, winning, flexing with their little peepee numbers, annoying others, and generally being hindrance. Feel free to prove me wrong.
It's just funny how people have the nerve to attack only when they have upper hand.
I know I haven't been active in the game lately, but can't honestly remember when I last had even remotely fair wPvP situation.