Peter, 

Character? Or to be fully honest idiosyncrasy?  

991 GT3 RS is fantastic car that only makes sense if you drive it above 6000rpm. Can you do it daily or  in the city traffic? No. 

488 feels powerfull at low revs as well. When it gets to 6000rpm you are already way faster then RS at 6000rpm.  

I am not saying that 488 is a better sportscar then 991 GT3 RS. It sheer rawness it isn't.  

991 GT3 RS is for me fantastic sportscar. But, for me so is 488 GTB. I would like to exploit their differences on daily basis.