Final Fantasy has the word 'Fantasy' in it... But it is like the futuristic? Real world.
Why are we going on about Tifa being a slut/sex model when this topic is about how can Tifa do that limit break in the game with a mini skirt. (I thought she was wearing shorts, too.)
Put it this way:
People who think Tifa is 'hot' are people who don't have a girlfriend IRL, and therefore consult to pixels, cyber flirting, and the like. Cyber flirting by saying they have huge muscles, etc etc, and going 'HEY HONEY!!!11'. Or shit.
Anyway, I dunno if Tifa can do really do it... Her skirt still looks like a pair of shorts.