True, but at the same time you can wonder how much somebody will notice of active engine mounts if that person isn't shaving laptimes 40 hours a week. Some could say it's just another thing that can break down. But ye, really listing what you get extra, a GT S vs GT offers more bulletpoints difference than an R8 Plus vs R8 V8. Unless somebody really only wants a V10 and be able to say it has that.
Remember though Merc does the same thing. The x65 AMG used to be a rare top-notch offer, now it's as wide available as they can including on that ladderchassis container, it's being surpassed in terms of performance yet it costs around 100K more than a 63. But people will still buy them. It's a V12 with 1000Nm, still more than a V8 900Nm, and it's more expensive when new so they can show off even more and be able to say ''I bought the best one they had''.