If his car was stock I strongly believe the 335i would take him in the hwy. It is hard to say because both cars react very well to mods. On either case and with simnilar mods I am still inclined to say that the BMW will take the Evo on the HWY specially at triple digits.
The greater torque and much better drag coeficient on the BMW will make it favorite. And please, lets not gneralize the people because of the car they drive. I drove/owned the 335i and Evos and I definately don't want any negative comments generalizing.