This is comparing apples to bricks, and yes, the 300c is the brick.
Anyways, the higher hp car will generally always pull away at higher speeds. (110+)
Especially w/ a difference that large.
However, I am almost CERTAIN that his car is electronically governed and yours is not. Therefore, in a straight line race, stock for stock, you would eventually out-top his top speed and win
I'm not suggesting you try it, either!