The numbers don't tell much, I think that's pretty much established. You can tape a rocket engine into Honda Civic and have it go 1.5s 0-62mph. However, the "other reasons" might well result in the new M3 beating the Z06 on the Nordschleife. That's a better real-life test than any 0-60mph numbers can ever be.
Still I'd rather drive a 5.5s 0-100 BMW than a 3.5s (0-100) Corvette any given day.