The first picture (red car) is an FR bumper with
Cupra grille - there are not the 4 x slots above the front VRN plate.
The second picture (white car) is a
Cupra bumper with the fog lights fitted - assumption here is that the aperture is the same or these have been reworked to fit. This still doesn’t answer your question.
The fact that the car is a manual means that there is still 1 x aux radiator - the
Cupra puts out more power than others in the range, thus generating more heat. The car has a larger coolant capacity (using additional heat exchanger) to compensate for this.