Ha ha. I saw this the other day and checked out the performance cars further and remember thinking 'oh hell is that it'.
Yes it's marketing and I should have expected it anyway. Lets face it, nearly every BMW model has a performance model right? Yes, you buy the next level up (ie,a 325' instead of a 320i) at the cost of a few £££'s more. Problem is, we're still short of cash and generally these days people expect something for nothing, ie, not have to pay much more for it. So you offer them 'performance' for the bear minimum extra cost. So I think people will go for it, those who cannot afford a better base model to start with.