The report doesn't seem to break this down into iPad vs phone/pod which is annoying. I use my ipad for purchasing but very rarely my phone, but maybe this is unusual.

It is talking about people making purchases through retailer's websites from mobile devices, not app purchases or anything along those lines.

I think the iTunes gift card is a huge factor in this. Anyone in my family who owns an i_____ device receives these things routinely for birthday/Christmas gifts from relatives who don't get them something personal. The Android market doesn't have gift cards in your local Walmart/Target/whatever for people to just easily pick up as gifts.

90% has to be more than just iTunes purchases. imo this supports the widely known fact that Android users don't spend money as much as iDevice users.

What is the the breakdown of iPads being purchased versus other tablet devices?