Probably just differences in preference. I love HKs and own 4 HKs (not including carbines/rifles). Dont own any CZs but love the ones I have shot. But for anything other than range, I just cant get use to them.
I'm the same way with HKs and I have to admit that when I first started shooting Sigs, it was sort of the same way, but my shots were naturally more accurate than with most other guns I shot, and the more I shot them, the more I got used to them.