Haven driven both, personally i don't feel there is much in it, the M3 is more powerful and a bit quicker as its 343 bhp.
R
The Mighty BMW M3 is indeed quick and powerful, but below it was in a shootout with the 350z and the Z won on track. Its near the end of the tribute footage!!
that was some tasty heal-toe action there! just shows how much is actually down to the driver, can't believe how far back that boxster was.
R