I'd bet that Acquisition Program Name is for people like me who were complaining about Acquisition Program being a system locked down field. It isn't available in many picklists, nor in certain filters. I really wanted to trigger campaigns off of Acquisition Program. So as a work around they duplicated the data into Acquisition Program Name and didn't make it a "special" data point, allowing it to be selected in lists, etc.
Acquisition Program = Master naming for programs
Acquisition Program Name = Friendly usable name