The Brackdraft 8e was changed to a single 14.8v Lipo and the Rustler is stock with 11.1v Lipo. The Brackdraft 8e wins in a drag race because of the 4x4 traction, but the Rustler VXL has a higher over all top speed.
I also have the Backdraft 8e electronics in a Rustler and it is very fast, much faster than the stock Rustler VXL with the 11.1 Lipo. Check my channel for videos of that one.