RS6 vs SL63

[The Major]

I was looking around on the net earlier and came across these two runs against the RS6 and SL63, I would of thought that the 63 would of started to slowly pull away from the 6' but that's not the case here!
I've always had the impression that the SL63 would be Faster or Equal to a stock or modded 6' I guess it aint this time.

http://www.youtube.com/watch?v=yHKCKGuo ... re=related

http://www.youtube.com/watch?v=ZT67g3GK ... re=related