Yes there may be a difference. When we all set up the new BattleNet accounts and tied our WoW games to it you probably used another identity for it. Either an existing BattleNet account or created a fresh new one. In my case my BattleNet account is very different from my WoW account. The WTF folder account names need to be your wow specific ones and not the one you now log in with, unless of course they are identical
