Well, there's comparing the technology subjectively (which obviously makes no sense) and then there's comparing the feeling the respective technologies gave you. Maybe the "new and fun" factor of the iPhone made someone feel like they did when the Amiga was the "new and fun" thing.
I'm not an old-school Amiga user by any means, and I was quite bored with computers when I decided to pick up an Amiga a couple of years ago. I know the "new and fun" feeling, and understand people seeking it out.
It's not about computers, it's about feelings!
edit: I will also add, I'm not an iPhone user.