Ping will be painful indeed if its too high.

How much were you getting exactly? PvP is the most demanding on ping imo, especially if you want to play a melee class!

Below 500ms would be good, but it will still be hard to compete with East coast US players who easily get below 100ms...

Yar, I was more asking to the TS who asked if his ping would be an issue in pvp without telling us roughly how much of it he was getting

Yar, for melees the lag will means you will see yourself at the melee range but because of the lag, the server will consider that you are too far.... Sucks hard for melee.

Ranged/healers have less issues on this so they will be less affected by the lag overall (but it stills important, try to Counter Spell a short casting spell with a high lag is not funny).

400 should be "ok". 700 can be problematic already, it's not really good.