I can't help feeling that this falls into the problem where netbooks are often viewed as "crap for games" because they can't run the latest AAA games, whilst a similarly sized tablet is viewed as amazing, because it can run 10 year old games...
The keyword here is GPU, and architecture. I don't know the state of current netbook, but sadly, those days, netbook is seen what office worker carry when they doesn't want to break their back, specially just to do the usual office work (word, excel, etc). I don't remember any advertising point that talk about GPU and all.
Ipad, on the other hand, is "consume" device, and this, include multimedia and games. So it is tailored that way. The GPU on the new ipad is so powerful that it was 6 times (can't remember exact fact) than asus transformer or something - although the new ipad loses on the CPU side. Just to show the stress Apple put on graphic processing.
Sadly, when I browse Autodesk designer on itunes, it seems (from the top of my memory) it can only hold 6 layer. That is sad. I guess netbook has it uses and ipad 3 has it uses, and designed around that.