While I'm fine with Windows 8 as a desktop OS (personally the only thing I miss is pinned documents in the Office suite), I still don't think it offers anywhere near enough as a tablet OS (RT or standard) and in terms of app availability, that will reflect badly on Windows Mobile 8, which sadly seems quite a good, solid and well-thought-out mobile OS.
Lack of quality apps, yes definitely. But not offering anywhere near enough as a tablet OS? In what way?