I think the 'small thing' that will swing many people (who haven't yet got a full size iPad) will be bringing their iPhone/iPod apps over. I know many people that have a considerable number of apps and games that they are loathed to ditch when they move on to a tablet, and that will be the main reason they won't go Android any time soon.

I am the inverse - I've 'bought in to' the Android eco-system so much so that to set up an iOS device with all the apps/features I love on Android would set me back a fair whack - plus I know what works for me - I'd have to research the best apps etc. for iOS - and I'm just too lazy now.