Hey, so I ordered a 13" Macbook Pro Retina, but I was wondering if it's weaker that the 13" Macbook Pro vanilla for gaming? I haven't saw any relevant comparisons on this, but specifically the game I had in mind is World of Warcraft, where I saw a video of a guy playing WoW just fine on the Vanilla. I'm worried that the screen may put too much strain on the graphics chip.