3.9s 0-60 means a roll out start... has to IMO. Standing 0-60 for ANY stock M3 have not been under 4's anywhere. I think a lot of the mags do rolling starts which could explain the 3.9 result. Having said that, it looks like all 3 are similar in performance with the Caddy pulling a bit as speed increases... that it what I would have expected.
2016 M2 | Long Beach Blue | 6MT - current
2015 M4 | Austin Yellow | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT
2012 MB C63 Coupe | Performance package | Obsidian Black
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package