I think had Brammo still been around making motorcycles and had a newer version of the Empulse out today, it would beat them both. The technology in the Empulse R and even TT was mostly developed 6-7 years ago.
I believe I was told some time ago (I could be incorrect) that the factory programming limits the Empulse to 75% power by default. I wonder what how much faster it would be at 80% or higher