I don't cross compare aperture values, I leave that to the likes of the Northrups
or those who are extremely picky about 'bokeh' or blowing 90% of an image OOF. F2 is still F2 to me no matter the format, whether FF or M43 as I can get the same light. At such close distances and that kind of magnification I think having more in focus is a bonus tbh [I still reckon M43 is possibly the best system for macro] because your plane of focus is going to be extrmely shallow even stopped down. If you reverse the equivilance in that case with smaller sensors you don't have to stop down as much. On M43 I often shot 1:1 macro at 5.6 - f/8, with APSC I find I need to step down to F11, for the same DOF on FF I'd be going F16 or so.
I wouldn't compare this to the Fuji 56 [a lens I've never considered as it's CFD is very poor] I'd see them as completely different lenses bar FL on paper. I would shoot very different with each and this 85 because of the other specs is much more appealing. If anything I'd equate this more to the Fuji 60mm 2.4, because they are designed for similar puprose. I would have owned that lens by now only for it's apparently the slowest of all Fuji lenses, inc the 56. But it does do 1:2 macro and is a nice FL on APSC for that purpose.
Regardless, once I noted the 1:2 magnification and close focus ability, it seemed more like a good price. So long as it turns out to be nice and sharp even wide open with no issues [CA, horrible flaring etc] but I would bet on it being very good if not excellent.
Looks to me like it'll extend at the front when close focusing though could be wrong, be nice if it does have IF