The logic seems to be that h-shift would be a bigger disadvantage over the other 2 cars to balance them.
I would be quite upset if I used the FXR or XRR and I had a G25. I don't car what any car would have IRL, I want to be using an h-shifter for the fun of it, not use sequential because it's faster.
Lucky I first, don't have a G25, second my h-shifter I built is a POS and doesn't work, and third, I use the FZR. But I fear eventually all the GTRs will be sequential and I'll hopefully at least have an FF joystick for a shifter. It would be the end of h-shifting fun before it even started for me.