The likelihood that they're actually different is right around zero --- which means they are fine for both.
Similarity: Broadband coatings for flat fold mirrors usually have designations for either normal incidence or 45o angle of incidence (90o fold). In actuality, the coatings are absolutely identical... and fine for either application. The film vs solid state detector designation tends to be the same concept. It makes you feel that you are getting something customized special, just for you. It's in no way deceptive because it performs to specifications.
On the other hand, there are indeed some specialty lenses and coatings that are optimized and built for one best application. e.g. The Lunt dedicated H-alpha eyepieces, which sport antireflection coatings with their minimum reflectivity right at that wavelength. I bought pairs of all of them. Tom
[I was a coating engineer/scientist at B&L for twelve years.]