SkyDrive now has an Android app and is mobile browser friendly, so that chart was probably updated before last week (

, and it looks very pretty and integrates very nicely with the Open Share system). If you were a legacy user, you get 25GB instead (+5GB from Windows Live Mesh, devices.live.com), so hopefully you played around home.live.com with your
Windows Live ID Microsoft Account back then, and has extensive integration with Office Web Apps, Office 365, Office 2010, and the Office 2013 Preview. It has good integration with (and improvements are under way) within Windows
Live Essentials, Windows 8, major social networks, minor multimedia social networks, and plug-in support for 3rd party developers.
Oh, and I also find that SkyDrive pushes more reliably than Dropbox. But it's just pushy, so who cares about that? And less downtime.