Well, 15 hp ;-), and 35 Nm of torque (230 i.o. 195)
Also, the spread of the gears is slightly different (meaning you'll run lower revs in 5th), and it's got disc brakes all around. Since it's only been introduced in 2004, it has the 42-litre tank standard. (early 75ers will have the 34-litre tank)
I'm happy with my 75, it's more than fast enough for me.
BTW, the 90 hp version of the 1.4 TDI is used only in the A2, not in any other VAG car as far as I know. There won't be many of them around.