Note that when the Diafine data varies according to format the variations in EIs for a given emulsion vary according to film base thickness; thicker films having a lower EI:
APX 100 in 35mm, EI 200; in 120, EI 250
APX 25 in 35mm, EI 40; in 120, EI 50
Pan F+ in 35mm, EI 80; in 120, EI 100 (both of which, IMHO, are optimistic)
So for sheet film I'd check on the film base thickness and adjust accordingly.