I tried it with both the stable version the github page links to and the latest beta version on http://smartdeblur.net/. Other than changing the blurryness to blockyness, it doesn't seem to do a whole lot. [1]

Maybe it works better on motion blur e.g. because with motion blur all of the information is still there (just overlayed or convoluted in some other way), while this image is just an interpolated version of a smaller image that doesn't contain as much information.

It's definitely possible that someone else might be able to change some program settings for the better though.

[1] http://imgur.com/DnkbL3V with a 100x100px kernel and 51% smooth in the v2.0 beta. Not exactly an improvement