I doubt guns are useless. You just need to be using more dakka. And then there's all these other wonderful things you can do as a vampire, which makes the whole issue with the paper master irrelevant, as when you can look at someone and hack into their mind without a word, or summon phantams and all this other wonderful shit, a paper master is horribly outclassed.
For that matter, Jack has such an advantage over him it isn't even funny. Ever tried to fight a pack of feral dogs hopped up on Vampire Blood and possessing resilience? No? Do you want to?