ok, the search function is there, but heres a run down:
172 Cup only in Mondial Blue (last few availible in Iceberg Silver, pretty rare)
172 Cup 120KG lighter than FF
172 Cup 10mm Wider track front and rear
172 Cup (allegedly) 5mm lower, but this means nothing due to low spring tolerances.
172 Cup has cup spoiler and splitter + Turini Alloys
172 Cup has factory bench tested engine, what difference this makes is of debate, lol.
172 Cup has not got he following, which the FF does;
Aircon/Climate Control
6disc cd player
leather/alcantara seats
alcantara door cards
ESP
ABS
The last few cups were availible with aircon, but these are pretty rare.
Cup is also more expensive to insure due to lack of ESP/ABS.