I think you're misunderstanding what people mean when they say it "lacks soul." Judging from the lion's share of the responses, they mean no matter what pickups/etc are in the guitar, they sound "sterile." And alot of these players who've commented on this are RTers who I KNOW don't suck at guitar.
And if that's their main complaint, you certainly aren't going to change minds with that Protest the Hero clip. Which is certainly monster playing, but actually adds credence to their argument about Kiesel guitars sterility, tone-wise. That incredibly dry, robotic type tone combined with the ultra quantized modern metal is exactly what these commenters are talking about.
FWIW, I've played good Carvin/Kiesels and bad ones. It's not really an issue for me, because I don't play ultra modern headless multiscale 4d underwater backgammon slap/tapping youtube guitar. I'm not the target demo for Kiesel. But I think you may have actually worked against the point you were trying to make.