I've never ridden an Enertia, so I cannot compare, but with the Empulse, be prepared to get a kick in the pants when you twist that throttle! However, after that spanking you're probably going to hear yourself saying:
"Thank you sir, may I have another."
I think that I've felt about the same acceleration as with one of those horizontal take off roller-coasters, and I wasn't even in Sport mode!
I'm sure you'll enjoy the bike.