I was told by both of our local stores that they would match one or the other but not both. It is in their price match policy that you can't "double dip" on discounts, for lack of a better way to put it. It's in the small print. If there are stores out there that are matching both, they are violating Best Buy policies.
I don't understand all the animosity toward the $100 app store card. I got iWork for free and still had some left to get some music on iTunes and some apps for my phone. Plus, in addition to the $100 discount on the computer and the $100 gift card, you can also get a $100 rebate on a printer, if you need a printer. I didn't take advantage of that one because I have a good printer, but it is still a really good deal.