So your exciting solution is "run and cower in a corner"? Yeah, that's brilliant.
Now you're making whiny excuses. Someone who has 5 mobs on them at the time can res, heal up and attack the one who killed them the first time. What can a level 30 character do?
The key problem with your idiotic logic is if everyone wanting "fair PvP" moves over to PvE realms at this point, you likely won't have anyone left to gank. Nothing makes a PvP realm "safer" than having no one to kill in an entire zone. This is probably why they dicked around with what world PvP was with cross realms and then didn't offer any kind of migrations. 1. Milking people for paid migrations. 2. With free migrations where entire communities could select new servers, there's no reason to stick around on a PvP server for friends who can come with you for free.