How do you know specs don't go backwards? How you personally been involved in the creation procces of a console before?
It makes perfect sense to me that it's possible that they overshot their early dev builds, perhaps using the specs of early builds would have just been to expensive to use for the final console for a pricepoint that Nintendo may be aiming for.
As for your "I don't get why it's not to be taken as legit", well if this was professional legit interview, the THQ employee would have been named as I have previously stated.
Specs don't go backwards because you don't want to pull the rug out from under devs. You never court more power than is actually viable in any serious way, because devs will get pissed off if they suddenly find themselves having to cut things from games they're developing on your dev-kits. It makes more sense for one to start conservatively and then edge up as you get a clearer idea of what is market-viable for your final product.
Monster Hunter: pissing me off since 2010.