the answer to that really depends on how we're comparing. AWD will have more driveline losses at launch and throughout all RPMs. which is faster depends on how large a factor wheel spin is during lauch. if you could equalize drive wheel traction with larger tires on a RWD vehicle to the traction of a AWD vehicle, if both vehicles had the same engine, the RWD will win the race.

ever wonder why many auto manufacturers have a much higher HP rating for their AWD versions than their RWD versions yet both vehicles do about the same in 0-60 and 60-100?

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dew
86' 190e 2.3L 16v