Camera lenses have to cover much wider fields than binoculars, at least with standard and wide angle lenses.
The TTH patent 3 layer coatings were tunable depending on application.
I am surprised to see a Zeiss 1935 coating on a binocular, although some lenses had internal coats in 1933, but this was kept secret.
Kodak were hard coating at the end of the 1930s at least with military lenses.
More important than the type of coating is, how many surfaces are coated?
All air to glass surfaces, only lenses, not prisms or only two external surfaces, or every surface except the rear surface.
Also, how accurate are the coatings.
Additionally, top end professional lenses have all cemented surfaces coated as well.
Few if any binocular seem to have cemented surfaces coated, although some Pentax eyepieces have this.
I am very happy to use a binocular with single surface coating on all air to glass surfaces.
With clear 'white' glass, not grey glass.
Regards,
B.