The CZ and Hi-Power have little in common except a basic shape. The CZ is not a copy, a clone, or a knockoff. The internals are fundamentally different.
In some respects the CZ is more versatile. The CZ is a true double-action gun, designed that way from the start, but with the extra functionality of a single-action "cocked and locked" start possible. That extra functionality adds a lot of complexity to the mechanism. You can also "start" the CZ -75B from the half-cock notch without compromising safety -- as it has a firing pin block and a very robust sear. (Starting from the half-cock notch makes the DA trigger about a pound lighter.)
Properly tuned, the CZ trigger *CAN* match a properly tuned BHP. The disadvantage of the CZ trigger is that is a bit longer than the BHP, and the grip is a little (very little) larger. Both have excellent pointability and ergonomics.
The newest Brownings are not, in my experience, superior to the older ones -- being now burdened with crappier, heavier triggers than theoriginals; that's arguably built in to keep liability lawyers off their case. Newer models do offer .40 S&W, which is to some thinking an enhancement.
A finely tuned Browning is wonderful, but so is a finely-tuned CZ.
Which can be gotten that way easier?
Probably the BHP, but in terms of total dollars spent to get the same level of polish/finesse/refinement, it would probably be almost a toss up.
I like them both, and don't see a clear advantage of one over the other. My tuned 75B SA is every bit the match of my very fine BHP -- the BHP is a little smaller, narrower, etc., which could give it an edge in CCW. But they are so close in size that they can share some holsters.