I would say it (OSX) is worse than windows, yes. In terms of stability, definitely... usability, probably. iCloud works better with windows than OSX (any version of OSX) and it isn't iCloud's fault or windows's fault. (mail, calendar, contacts, photo stream, is all that I use icloud for)
iOS was the best compared to blackberry or a cheap javaME featurephone back in the day, but the only thing that keeps it around now is all the entrenched hardware it needs to support (at least for me), that just doesn't exist anywhere else. It works fine but it doesn't do anything beyond that. No excitement. Which I suppose is what I really want in a cell phone. If you're a nerd then you should definitely be looking elsewhere.
If you're referring to the use of skeuomorphic interfaces,
this shake-up could be good news
I liked that part of it. It was cute and it made it easy to tell which app was where even when (for example) only a tiny bit of the calendar was showing, or you used that bastardized new version of expose called.. what was it?... mission control.
The problem came in with all the extra buttons scattered loosely across the title bar for various features such as full screen, saving, etc. The notification center I thought would be useful for facebook (facepalm) until I realized I would
to squish together the facebook people with the contacts people on my phone. No way around it, at least I didn't bother to look too hard.
All the old 10.6 stuff still does everything I need it to do. If it weren't for the power consumption and lack of portability I could do everything I need on my onyx. And then some