Mere mortals simply get to ask questions like the one in our title and then debate them over a pint at the pub. Chris Harris, however, is no mere mortal. Who else but Chris could pull together a 991 GT3 RS, Aston GT12 and McLaren 650S on one track to compare them to each other? As usual, there's a lot of gratuitous hooning/drifting that his video's are known for. However, Chris still manages to impart a significant amount of information while driving these monstrous machines at or near their limits. Watch for yourself and see how the GT3 RS compares against machines with significantly more horsepower.