You may very well be right about that pal... But I think BIA was one of the first "crop" of commercially successful records to have used the DASH format.i always thought "Tug of War" was the first album recorded on digital. it's one of my favorite McCartney records. but again that would have been through the ISA desk at AIR.
And as you mentioned, if they tracked Macca's album at George Martin's place, they probably used the Focusrite ISA desk, whereas BIA was through the 8078. Lol...either way, I don't think either album "suffered" sonically.