Personally, NetBook can do more and perform more and be "modified" more (i.e. upgrade RAM or add more peripherals or increase HDD/SSD, etc). Of course, just like I am a FanBoy, the Apple FanBoy would flock to whatever new product is thrown at them and not because it's better but because it has "Apple" name tag in it. Now, my FanBoyism wanes in comparison to these fanatical flock of sheep.
Confidence is built upon credibility, something Apple really earned thanks to the first iPod. Apple gained the mainstream credibility to introduce a product, say it's going to be the best thing ever, and have customers give it the benefit of the doubt.