I dont know where you get your statistics from, but in most credible Automotive Magazines, the C32 AMG beats the M3 from any 0- whatever run. True, the M3 might handle better than the C32, but in speed comparisons, the M3 has nothing on the C32.
As for the E55 comparison, its funny that this "slushbox transmission" devastates the M5 performance wise. "Good performance?" Psh, the E55 DESTROYS the "supreme performance" M5 in ANY 0 to whatever competition.
You say the MBZ has no tuning? Are you deaf? Have you ever heard of Renntech, Brabus or Kleeman? You know, Kleeman, the guys who created the worlds fastest SUV. Renntech tuned the the CLK GTX, a car that will devastate ANY tuned BMW.
Go ahead insult MBZ engines all you want, atleast the C32 enginge doesnt spontaneously EXPLODE.