In many ways the more relevant and more interesting comparison would have been between the Leica S2 and the Pentax.
There again I don't think it would be worth bothering, the differences in such a test would be minimal at 100% on screen and virtually invisible in print.
Absolutly! Those 2 cameras are natural competitors.
But now let's get serious for awhile.
And finally, I was thinking about that Pentax and I'm disapointed really.
-it doesn't cook
-it doesn't display my road on gps
-it doesn't have smile and sunset detection
-it doesn't integrate with my fancy I.phones, I.pods, I.pads, and does not have an apple logo anywhere
-it doesn't exists in pink color like the Kx
-it doesn't have a Lamborghini limited version
all that is not serious at all for such a brand.