I had a Bushwhacker Mistress that I tested against my LC. It came to me second hand but unused, and its performance with the stock grind was shit, I mean I'm not even sure how anyone could think it would work well with an edge like that.
Once the primary bevels were reground, it functioned as it should and the steel and its heat treatment showed a lot of resilience.
It would chop through the same log with fewer strokes that the LC, but I credit the additional weight with providing that benefit. In fact, I tested the LC against the BWM against the HC, and the HC out chopped the others. It was about the same amount of additional weight as the BWM to the LC and similar upgrade in chopping performance. Not exactly a controlled scientific testing, but I think that all other things being equal, weight will determine the number of strikes it takes to get through something.
The other thing I had a hard time with on the BWM was the handle. While the shape of the handle felt good to hold, in use I found that it didn't stay put in my hand the way I like. Flared tube fasteners look awesome and provide a really solid mechanical fastening method, and feel good if they're done right when I'm just holding the knife, but I found them to far too noticeable when chopping. To my way of thinking, I don't want to notice or be distracted by anything about a knife that I'm using, other than the job it's doing.
I've always wanted a Battle Mistress, but after using that BWM and all these CPKs I have a feeling I'd be disappointed. One of those 'meet your heroes' type things. Not trying to shit on Busse, as I have a lot of respect for the company and understand the rationale behind why the knives are ground the way they are, but I'm definitely spoiled by the P in CPK...