I have the FR+ 150 TDI. My mate has the cupra.
The difference between the two are:
FR+ has cruise control, reversing sensors, center arm rest for driver,
Ermmm, Nope to all those (as standard anyway).
The engines and suspension setup is the same.
The Cupra Used to come with a Cd changer but i don't think that lasted for long. The FR's don't as standard.