The Glock has it beat in many other ways, IMO
Build quality
Material quality
Design
Reliability
Capacity
I don't find my Glocks to have any better build quality or material quality than the Kahrs I've owned or had experience with. They are both very good in terms of build quality and finish (but not in the same league as HK or Walther in my experience).
Glocks use tenifer-treated steel and Kahrs typically use stainless, so both are very corrosion-resistant. I haven't noticed one to wear any worse than the other. The matte finish on more recent Glock slides definitely shows finish wear sooner than the tougher, smoother Glock finish of old.
The polymer quality of both seem similar (which is to say a bit worse than the much nicer-looking and rigid-feeling polymers HK or Walther use).
Design is subjective in many respects, of course. I hate the flimsy design of the 7-round Kahr mag baseplates (at least for the PM9/CM9/MK9-sized guns), but the 6-rounders are stout. DAO striker versus pre-cocked striker is a user preference.
In terms of reliability, both my Kahr CM9 and MK9 have been flawless through thousands of rounds. This is more than I can say for my Glock 19 (which suffered an early breakage of the slide stop spring, causing numerous pre-mature slide locks and stoppages). After repair, though, the Glock 19 has been flawless.
Capacity - well, different capacities for different roles. Both are very good pistols for their intended uses. The Glock 19 is one of the smaller pistols I can think of that holds 15 rounds (along with the similarly-sized Walther P99/PPQ).
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