Size wise? The K-T PF9 is a bit smaller and lighter than the micro Kahrs.
I don't think so. Check out this
link. The Kahr is noticeably smaller but does weigh about 1.3 ounces more.
So it would seem. I was going by memory having handled and fired both guns in the same range session. The PF9 is slimmer though, for sure.
Anyway - The PF9 works. Surely not for as long as any Kahr though (even K-T tacitly admits that), and it's harder to shoot well. The Kahr is clearly the better of the two.
