Yes, with OpenXC you definitely get more data from Ford vehicles than you would with other OBD2 dongles. Most other dongles do diagnostic requests to access vehicle data like engine speed and vehicle speed. OpenXC can perform those same requests AND decode raw CAN traffic to access a whole host of other data. Take a look at the data set here:
http://openxcplatform.com/about/data-set.html. A lot of that data set (like GPS, door status, steering wheel angle, etc) is made available my translating the raw vehicle CAN traffic are not available via diagnostics.