No.
The only difference is the replacement interval.
Copper is just that, replace every oil change pretty much, platinum lasts much longer, and iridium lasts around 20-30% longer than that.
For performance there is absolutely no difference.

I always used PFR7B (which are the stock plugs anyway) on my supercharged alfa 3.0 engines,
but its far from 200hp/l .

On an Lancia Delta Integrale 2.0 Turbo with ~580hp we used the same PFR7B gapped to 0.6mm.
They work great.

As far as i know PRF7B and PRF7Q are essentially the same with a different gap from factory.
The PFR7Bs i bought all had a 0.7mm gap.
The PRF7Qs should have a 0.8mm gap (i did not verify that, only have been told so)