If you live in Oceania (Aus/NZ) then PvP is mostly a joke. It's alright to have fun and even rank up a bit, but always remember to bow to your low-latency US overlords because dodging and anything else reflex-based will have no effect most of the time, not unless you can see into the future
Paying for tunneling services can help, but not by much (and then GW2 wouldn't exactly be free would it :P).
I learned this quickly so I stick to PvE, but even there the delay is uber-punishing on the more difficult fights.