Pretty much every GUI has usability problems, but I would agree that OSX isn't really any more intuitive than Windows. They both have their idiosyncrasies, they both have plenty of extraneous features that I prefer to disable, and neither one ships with a decent file manager.
Apple is just very good at marketing and packaging their products, and by avoiding the bottom end of the market, they create a false image of quality and reliability as compared to Windows PCs. There are plenty of ugly, unreliable, crapware-filled Windows boxes out there making the PC look bad, but not so many junk Macs.