Don't get me wrong, I like Apple products and some of the things they have brought to the table are amazing (mainly the ipad / iphone range).
But...
You can't deny that you are paying more because of the fact it looks pretty and is fashionable. If you we're going by specs vs price alone you'd end up with an Acer.
There not the only ones doing it, HP are desperately trying to get into that market with the Voodoo range and now the Envy models but they will always be limited by the fact it comes with Windows, which while I think is great doesn't have the marketing buzz behind it like Apples OS.
I work for HP so I'm probably a little biased but I'm currently writing this on a Envy 13 which has a beautiful screen, amazing battery and styling yet I can do absolutely anything I want to do with Windows 7. No limitations.
Anyway gone off point, to the OP the main thing Apple will be looking for is someone is naturally confident and therefore projects confidence into peoples minds when buying their products. They can give you all the technical jargon later but if a salesman (which a genius is) seems shy or hesitant your not going to buy his goods.