They look identical from the outside, but there are some electronic differences. Also their part numbers are different.
I own both the FZ07 and the R3. I had a brakelight modulator plug and play chip for the FZ07, replaced it with a tailllight assembly, kept the old chip just in case. Bought the wife's R3. Installed the chip on the R3 (connects to the tail light wire). It doesn't work.
But for the case of this topic, that doesn't matter since it has nothing to do with a brake light modulator chip. But just wanted to point out they aren't 100% identical.