I never heard the expression 'pixel pitch' before this thread.. so I looked it up and it makes sense(complicated but makes sense.
Then in their comparison tables (long technical article) they used the expression "35mm equiv. FOV focal length". My guess is that this is what the exif data is referring to ... and consistant with your explaination. I just love learning this stuff. Great discussion topic for the Thanksgiving table next month!!
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol