In that comparison the RS5 might have done better but overall the M3 has won more comparisons against the RS5 if my memory serves me right. I would still pick M3 over the RS5 as according to most comparison tests it is faster and more fun to drive.
nick named "BAD 3"
Cobb tune, RennArt catback non resonated exhaust, M-sport steering (racing alcantara & retrofit M3 paddle shifters.), Alpina B3 transmission flash, AFE powered sealed CAI, LED angels, 235/35/19x9 front & 275/30/19x9.5 rear. When in doubt...flat out