Well said, carydad, I agree with you for the most part.
I also got the two machines, but I built a rack in order to play them together in a sort of bi-amping configuration (plus an external fx).
I did a lot of comparisons Axe II vs KPA vs real amps "on the fly", thru my main monitors or my amp&cab.
The very first obvious thing I can say is that you cannot evaluate Axe or KPA just listening to the (tons of) recorded samples...
The second is: also with the machines in your hands, the learning curve is at least 1 or 2 months (less if you can spend 18 hours/day
), so IMHO is really really difficult to make a decision without hours of testing.
Now, avoiding to repeat the just well explained features of both units, my added value could be trying to explain the "play feeling".
In the way I usually play (more rythmic lines than solos), the best response comes from KPA. With KPA I could better hear the emulated valve transition from clean to distortion. I usually make this test: with guitar volume at maximum, I play a chords "from smooth to loud" listening to the gradual response. A pure digital amp usually fails this test because the sound "from smooth to loud" is similar apart from the volume.
Both Axe and KPA make a good job but, in this particular field, IMHO KPA translates better the amp behaviour.
FXs are good in both machines, I prefer the quality of the KPA ones but with Axe you have more weapons (the pitch fx, for example).
Also if one is not interested in amp profiling, with KPA you can benefit from the rig exchange, a land of "just profiled" amps. The cons: IMHO only 10% of the profiled amps are really usable, so you have to spend time on browsing and listening...
The Axe Tone Match is a gold feature but, as noted, I think should be used "with caution". It helps a lot to shape your sound as a "liked" one, but isn't a wand. Amp response remains in the Amp block!!!
Vernon