You are right , if a Cupra and a golf R were to pull up at a set of lights and both cars were to pull off without launch control the results would be different to the
video Al posted , 4 wd is excellent for getting off the line using launch control but a bit h if it bogs down.
There's a
video showing a mk6 golf R v scirroco R driven by professional drivers and the off the line the golf R gets away but once moving the scirroco soon reels the golf in , I'm pretty sure that's what will happen with the the Cupra and golf R unless the gearing has been changed , have t seen the gearing specs so can't comment.