For me I think the track times show there is almost no difference between the 1M and RS3, however, despite being the heaviest the RS3 is the quickest in a straight line on all tests and most economical. 0-60mph in 4.2s! I wonder do they use a rollout? I don't think so because the 1M "only" achieved 4.8s
I'd still take the 1M because I don't really like the A3 sportback design. I only like the A3 in 3dr form.