[supergauntlet]

Hot hatches aren't supercars!

The instant acceleration and drag strip performance means it's closer to something like a Dodge Demon than a Ferrari 488. That's OK, it's just not realistic to say it's something it's not.

[lazerpants]

I don't think it's a supercar. But it handles better than a muscle car and you can absolutely compare it to something "that can actually corner at all" by looking at the list you posted at Laguna Seca. It's about 10 seconds slower than an AMG GT, which is certainly a supercar. Plus, most drivers are not going to be capable of taking either the AMG nor the M3P to the limit, so admittedly it's sort of a moot point.