Sigh. Drives me a little batty when people seem to intentionally circumvent the point just to keep the argument going. I thought it was obvious what I was saying but let me try again:
If the game is actually constructed with evil options for dialog, quest completion and factions (etc, etc) and the game world responds to your actions, then yes this game allows for evil role-playing.
BUT
If the game does not include these things, you're only pretending it allows for an evil role-playing.
I'm not talking about whatever stuff it is your character has done (or not done) that you, the human playing the game, has noticed.