It's not like the PC version was ready. It has issues that can not be fixed in another 6 months of development. But as bad as the PC version is, it's at least somewhat playable in contrast to the console version.
Skyrim still has plenty of content-related bugs (i.e. not graphical or performance related); Bethesda never fixed them but oddly enough, modders did and you can download a bugfix mod from Nexus or Steam.