I too concur that the 11 inch macbook air will completely turn away the ipad power users. Because ipad power users want an ipad with a keyboard + mac os x / programming ability. The 11" macbook air is all that ipad power users have hoped for. Viewed from that perspective, it's a pretty good deal. Way more power and usability for not a whole lot more price.
To turn the ipad into a laptop, you've got to:
Buy a keyboard for $69.
If you buy a stand (we'll say a nice one), that's $30.
Buy a mouse, a magic trackpad is $69.
So you're left with a $125 price gap. For that money you get a real OS, 2 gb of ram, way better graphics, and web cam.
Those accessory makers probably just got angry because anyone who's a power user would just buy a macbook air. I'm really glad that I sold my ipad 2 weeks ago before this came out. Got lucky.
I believe that the ipads need to have a $100 price cut across the board (sales numbers do not argue that one's necessary, however)
Good analysis.
However it is not truly equal
You are losing out on the GPS, 3G Data (without adding a USB stick), and of course all the nifty APPs won't run on regular OSX.