Acrobat isn't messing with anything here.
Actually, the spacing of text in a PDF file using any font has nothing to do with any Adobe Acrobat component at all! In this particular case, the layout is provided solely by Word. For example, when you “print” to the Adobe PDF PostScript printer driver instance, Word is outputting strings of text in a given font in a given point size to a particular location on a page. The driver converts that, as is, to PostScript and the Distiller takes that exact same layout and converts that to PDF. When you use the Save as Adobe PDF feature of Acrobat, it simply takes the exact layout provided by Word and expresses it as PDF.
Various versions of various Office applications have been known to have issues doing output with various fonts and regrettably, there is nothing that Adobe can do about that. The layout is ruined before we have a chance to do anything with it.
Note that one possible issue could be if the Franchise font family is a Type 1 font (as opposed to OpenType CFF or TrueType). Recent versions of Office (Office 2013 and Office 2016) dropped support for Type 1 fonts. They may display correctly on the screen, but do not output correctly. Again, not an issue that is under Adobe's control.
- Dov