. With the iPad you get 4:3 screen and inclusion in the Apple environment (which many of us see as a bad thing :P). With the Nexus you get a 16:9 high res screen, NFC and GPS all for a fraction of a price.
The screen on the nexus 7 isn't much bigger than some of those large phones out there now. With the large menu bar at the top and the virtual buttons at the bottom its nearer a 6 inch tablet. I spent a good while today playing with the tablets in my local Tesco - the screen on the Mini is gigantic compared to the Nexus. And why is the Apple environment bad, but the Android / Windows is not? Silly.