This isn't about which game sucks and which doesn't, but I gotta hand it to some of you guys how you derail this thread with so little clues to go on...
This is a concern about people who primarily likes PvP and therefore wants to spend their time mastering one char. People who, like me, do this may have some thought about (as an example) fighting a wz where you're bound to fight with only your class buff active for a considearable amount of time against opponents with an obvious advantage against you.
Sure, give people an advantage from a system that makes sense, but levelling 3 more char through chapter 2 in order to be fully competitive in PvP - silly if you ask me.