Acceleration also is in the M5's favor but it is fairly close with the manual trans. The manual CTS-V runs a email@example.com and the manual M5 runs a firstname.lastname@example.org. Close, but the M5 has the edge. What is interesting is that the DCT version of the M5 (which we are very glad Road and Track included the numbers for) beats both significantly running an email@example.com. The dual clutch transmission gives the M5 three miles per hour of trap speed and 4/10's in the 1/4 mile. Those wanting the absolute fastest acceleration will want to get the dual clutch transmission.
Road and Track says the M5 is not what it used to be as it is longer and heavier. The M5 is heavier than the CTS-V although they are fairly comparable in this regard (50 pound difference). If the M5 was lighter it would be a much better performer. For its size and weight though, it does an incredible job. The limits are high but unfortunately the communication isn't there. Road and Track complains there is a degree of isolation. So although the performance is better than previos generations as it should be, the driver communication and interaction is not. Is it really a better car because it marginally improves the performance numbers over the previous generation namely when using the dual clutch gearbox?