The fact that we're even having this discussion tells you how far Audi's come in the uber-sports sedan sweepstakes. Normally, this comparo would write itself. BMW M3 = driver's car with super smooth, vicious punch. Audi RS4 = sure-footed supersonic GT with numb tiller. BMW fun. Audi fast. BMW wins. But since this contest was first mooted, The Boys from Bavaria have made the jump to V8 space, while Audi have finally figured-out how to make not dying entertaining. But has anything changed?