BigR is pretty good, but he mostly gets his kills when the opponent is trying to save his E ("eh, just an other bore-n-zoom stang, lazy mode on") then he can surprise, overshoot them with the rapidly-advancing flaps. Its effective, nice to see and everything but honestly, due to the Mustangs poor slow speed handling, he dont really have a chance after the fight gets slower than ~180mph.
Other thing that he stays and flyes the crap outta that brick.