Some random thoughts for you:
they're all just grinders....just....grinders.
You put beans in the top, and they come out the bottom ground. End of story. Except in the quality of build of the machine built around the plates/ burrs. That is where the difference is (standard of design and build of total machine), and perhaps in the electronic features. I wager all the burrs come from the same maufacturers of burrs.....and for the rest of it they are still all only commercial coffee grinders, and with the kind of use you will put any of these grinders to in home use, they will all be fantastic.
And in terms of the specs of one trumping another...as i said, they are just coffee grinders, and you will find the important stuff (quality of grind) will be undetectable to yourn palate from one grinder to the next in real terms ( how can you ever know when there are so many other variables in making a cuppa).
The question is then, how reliable are the electronics of the fiorenzato? The mazzer is a known quantity, as is the macap which would be my own preference ( macap m4D, mxD or m7D or whatever size). And the next question is, will you ever use the programmable electronics?
Hope that helps.