I use a mac. It's a good computer but I agree the amounts of software and capabilities of Windows is superior to Macs, I love the sleek look of the Mac.
I think that has been true for a while, but now there is so much software for either platform that its irrelevant. The app store really turned everything on its head.
With Windows, Microsoft provides the platform and then lazily throws in useless stuff like Windows Movie Maker. This is because they know all of their customers already have their own video editing software from a 3rd party developer.
In the ecosystem of Apple, they provide what they envision as the perfect video editor for people. You then have a sparse amount of alternative options. Some could say with Mac OSX, you get a few options because its done once and done right.
Thing is, how does that really work out for end users? There is no one perfect definition of a video editor, everyone wants different features and likes a different interface and so on. This is why when it comes to the Mac, you are either liking it or hating it. There is no middle ground. Apple knows its market and it drills it.
Microsoft, on the other hand, spreads itself around on the sandwich that is the PC world and hopes someone else will be the filling.