This is a perfect representation of real world race between two well driven cars. A stock dct m3 will slowly walk a fbo 335 until really high speeds where they even out.
A FBO m3 will put a buslenth or 2 more.
I am not sure why 335 guys continue to say a stock 335 is as fast and a tuned is out of this world faster. Reality is not true. Unless you go RB's or run meth plus/minus e85, then your looking at an even race or the 335 winning