Hey GuitarHack,
Cheers for doing that shootout. The difference in your scenario is mucchhh less exaggerated than I have had in the past. I have had some serious low-end pumping going on with cabs in a corner.
In terms of tones, the 2nd track with the added gain is much better than the first set. It's much more like I'd expect a Krank to sound like. Having said that, I still dislike Krank amps and prefer the original Mark IV (sorry Neb, there was no recto) tracks.
PS. You seem to get tons and tons of around 200 to 300Hz in that second higher-gain sample. Was that back in the closet? Sounds really boxy.