So with the C8 and 911 they can’t be characterized as merely RWD for straight line acceleration purposes because of weight distribution. One of the biggest issues with launching is that by the time weight transfer happens tires are already spinning, so to get a good launch you want a softer suspension which would ruin the car’s performance at corner exit. Being mid or rear engined helps there because you’re starting with 55-60% of the mass over the rear wheels which is closer to AWD than RWD for launch traction.