Enjoy the Read.
Some numbers:
The BMW does 0-100 kmh (62mph) in 4.4 secs (VS 4.2 for the RS5 with DSG). The 0-200 is in the advantage of the M4 in 14.1 secs (VS 14.8).
Weight: 1585kg or 3494 pounds VS 1803kg or (3975 pounds!!) for the RS5.
Lap time (Contidrom measuring 3.8km): 1:34,41 secs (similar to Porsche 911), 2 secs quicker than the Audi. I assume with the DCT version, the M4 would be even quicker... Note that these are the results on the LONG handling track of 3.8km, not the shorter one at 3.4km.
Best times on the same track by Auto Bild:
1:29,50 min - Porsche 911 GT3 RS 4.0 (997, semi-slicks)
1:30,70 min - Mercedes-Benz SLS AMG
1:30,73 min - Nissan GT-R '11
1:30,95 min - Nissan GT-R '09
1:31,00 min - Porsche 911 Turbo PDK (997.2)
1:31,14 min - Corvette ZR1 (AutoBild Sportscars)
1:31,20 min - Porsche 911 GT3 RS (997.1, semi-slicks)
1:31,62 min - Corvette C7 Stingray
1:31,75 min - Porsche 911 Turbo (997.1)
1:31,95 min - Audi R8 5.2 FSI quattro R-tronic
1:33,46 min - Audi R8 4.2 FSI quattro '07
1:34,21 min - Porsche Cayman R PDK (987)
1:34,23 min - Porsche Cayman S PDK (981)
1:34,41 min BMW M4 Manual
1:35,04 min - BMW M3 Coupe (E92) DCT
1:35,76 min - BMW 1M CoupƩ
1:36,12 min - Audi RS3 Sportback
1:36,53 min - BMW M235i
1:36,62 min - Mercedes-Benz A45 AMG
1:36,88 Alfa 4C
1:37,01 min - Peugeot RCZ R
1:37,01 min - Ford Focus RS500
1:37,06 min - Mercedes-Benz SL65 AMG '07
1:37,35 min - BMW M135i xDrive
1:37,53 min - Volkswagen Golf VII R
1:38,24 min - Skoda Octavia RS Combi '13
1:38,38 min - Audi S3 Sportback S-tronic '13
1:39,50 min - Ford Focus ST Turnier '13
1:39,90 min - Renault MĆ©gane RS '14
1:40,15 min - Ford Focus RS '09
1:40,16 min - Mazda3 MPS '12
1:40,35 min - Audi S3 '09
1:40,40 min - Ford Focus