Not to defend the Mustang driver, but he did always give that MKIII the move. He would wait until the other guy spooled up. In the second race he even motioned him to go, then tried to take off once he heard him spooling up.
I'm sure that MKIII would have ran him down on the big end, but he would have been playing some catch up if the Stang drive took off immediately instead of waiting. I'd like to see the same race only with the Stang taking off right after the third honk, and not giving any kind of courtesy of waiting for the MKIII to spool up.