really doesn't have much to do with Windows
You mean, the Windows they already run on their handy, around-the-house, tablet form factor device? No, wait, that's right - no-one runs Windows on such devices. Almost no-one owns one. Which is sort of the attraction. This argument is about as silly as saying no-one would buy a Nokia mobile phone because it doesn't look like Windows.
Having said that, this does seem to be a rather long article for saying "You can ship it with a different desktop if you like. Oh, and we think we put Multi-Pointer X in there, but we're not really sure because we didn't write it and don't actually having a freaking clue how it works". So, Canonical as usual, then.