Googles apps compare reasonably well against the online Office apps, but Microsoft also includes the full desktop apps in the subscription cost, and includes applications that have no Google analog (like Publisher and Access).
In terms of the online features, as far as I know there is no transcoding available through Google Drive, and they partition their music and photo hosting into separate services, which I personally find annoying. And of course Microsoft has native support for all Windows devices, while Google only supports desktops. As a Windows Phone user, that makes Google something of a non-starter.
You can call me a shill, but I'm just a satisfied customer. Reluctantly, at that, since I used Linux exclusively for about twenty years.