Apple's version of iTunes on Windows is so much worse than the Mac version, that I can only assume it is intentional. For example, only one user may run iTunes at one time on a PC while multiple users can run it on a Mac. It also shits all over your registry. As a long time Mac iTunes user, I've been pretty frustrated with the Windows version, which I started using 6 months ago.
The counter point, however, would be my experience with iTunes and the iPad. Before I had a PC I borrowed an iPad which had just been reset. When I hooked it up to my Mac to connect it with iTunes, I discovered that it was incompatible with OS X 10.4. My mind was blown; how could the iPad not work with their computer when I only bought it 4 and a half years ago?! It works with XP!
So I don't know, maybe iTunes sucks everywhere, just in different ways.
I don't mind if iTunes sucks on Windows, because Windows has foobar2000. What really bothers me is that there are no worthwhile alternatives to iTunes for OSX.
The counter point, however, would be my experience with iTunes and the iPad. Before I had a PC I borrowed an iPad which had just been reset. When I hooked it up to my Mac to connect it with iTunes, I discovered that it was incompatible with OS X 10.4. My mind was blown; how could the iPad not work with their computer when I only bought it 4 and a half years ago?! It works with XP!
So I don't know, maybe iTunes sucks everywhere, just in different ways.