The question isn't what makes AmigaOS/MorphOS/Haiku/Kolibri/whatever better than Unix. The question is, from a user's standpoint, what could make it worse?
Unix isn't for everyone; that is a mistake the "Linux on the Desktop" crowd always make.
Some users are just plain stupid and they'll never leave their comfort zone and learn something new. It is very arrogant of the Linux distributors to think people will change to suit the distro.
As for what makes AmigaOS/... better? Obviously its the ability to run it on expensive, outdated hardware, running with the best apps that were available 20 years ago.
