It's totally moot to compare Windows of any flavour with AOS/MorphOS point to point. The latter OSes are not designed to substitute Windows, but to offer something different.
AmigaOS and MorphOS are quite logic, simple fast and unsecure (by design i. e. no MP, no rights mangement), while most successful OSes are secure, blown, rather complicated (well Windows < Vista not really) and slow. That's it in a nutshell IMHO.