Good to know.
Anyone know if the number of zorro slots are the same too ?
they are near-identical. Even down to the silk screening on the motherboard. However, some of the cards (the modules) like AV Modules, (disk and port) have different silk screening and perhaps very minor differences in components (like different caps, or a different colour circuit board), and even some motherboards have updated text on them, but otherwise, they are 99.9% the same, including the number of Zorro slots.
The only other difference (aside from the case), is that the Amiga Technologies 4000T had a DD floppy drive and a different floppy cable/adapter to get the PC floppy drive to work, as the floppy (and HD floppy) drives made for the Amiga were no longer available.