We think BMW is a little confused here, unless they're trying to tell us something like they did with the X5 M and X6 M minisite tags. If that's the case, then bring it on.
You can clearly see under the M3 Convertible on the BMW USA website that it says the following:
The M3 effortlessly harnesses 414 horses and 8-cylinders of twin-turbocharged brawn.
Twin-turbocharged brawn? How sexy.