I checked the Kyalami lap times from fastestlaps.com site after watching this (one more time I have to say, it is a repost but who cares, loved to watch it again) and there I saw that TT-RS has a slightly better time registered than the 1M (of course with other driver and other date but anyway). But in that particular comparison test with the same driver 1M was much faster (on track) than the RS3 like in many other comparisons.
Here is the link for the lap times of Kyalami:
http://www.fastestlaps.com/tracks/kyalami_new.html