Brassknuckle Vs Bareknuckle

Dredge alert!!!!

I'm looking to update my BLB commuter frame for something more hi-grade and was wondering if someone could explain how (in terms of geometry) the handling of the Bareknuckle differs from the Mercian? I guess the higher BB, straight forks play a part, is this it?

my bareknuckle is resting whilst I ride the mercian

the mercian accelerates just as fast as the bareknuckle

if not faster

I think that has alot to do with it being lighter

and over distance it is miles more comfortable than the bareknuckle

but the mercian feels as if it is tram-lining compared to the bareknuckle

I kinda miss that 'bareknuckle twitchiness'

I am going to rebuild the knuckle for the winter