Microsoft vs.Google Docs / Drive

Microsoft: Google Docs Is Not Worth The Gamble, Makes You Less Productive | TechCrunch

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In reality, format of MS Office documents is just too complex.
Plain HTML is much better, with styles separated from content.
Getting text and data from Office is difficult.

Is format of Google Docs / Drive better and more "open?"
In fact it is, at least in simple cases.
All formatting is defined as CSS classes, at the start of the document.
So it is a better separation, and cleaner HTML format.