I own both a CZ75B (Omega trigger system), and a Beretta 92FS INOX. I did a side by side comparison of the two a little while ago and here's my thoughts about the pistols.
I'll try to break it down point by point.
Overall feel of the gun (ergonomics mainly): The CZ75 with the factory rubber grips is BY FAR more comfortable than the Beretta, which is rather large and bulky. It's not a problem for me since I have L to XL hands. The shape of the grip of the CZ is far more contoured to the shape of your hand and thus, more comfortable. To compare apples to apples, my 92FS INOX also came with rubber grips from the factory. While it is comfortable to shoot, it's not anywhere near as comfortable as the CZ.
Slide manipulation of the Beretta is way easier since the slide is huge. Some people complain about the CZ slide because it sits inside the frame so not much slide real estate sticks out to grab on to. Once you get used to it, it's not really a big deal.
Size: The CZ is a smaller and slimmer design. It's great for carrying concealed.
The Beretta, on the other hand, is a large and bulky gun. It's really wide, especially on the slide, so concealing it will definitely be a bigger issue as compared to the CZ.
Weight: The CZ comes in at 32 oz's empty with no mag, the Beretta comes in at 28 oz's empty w/o mag. The INOX 92FS utilizes an aluminum alloy frame, and the open slide design so it comes in 4 oz's less. And yes, i actually weighed them.
Trigger: Since the CZ has the Omega trigger, it is by far better than the Beretta, and it just gets better with more rounds through it. I have probably close 5k rounds through my CZ and the trigger feels like its been worked. It's comparable to the Cajun gun works trigger mod that a lot of CZ owners do. Actually, I think it's better. In single action there's a fair bit of take-up, but there's a nice solid wall, virtually no creep, and a nice crisp break at about 3 lbs. In double action it's a fairly long pull, but that's what one expects from any double action. Weight comes in at about 7.5-8 lbs.
The Beretta trigger is great also. However, it's not as nice or crisp as the CZ trigger. Take-up is about the same, solid wall, but there's noticeable creep in the trigger, ok break. Pull weight in SA is approximately 4-4.5 lbs. Double action is probably closer to 10.
Shootability/recoil: Both guns are great shooters without a doubt. However, they're distinctly different. The Beretta is a delayed gas blowback design, and the CZ is recoil operated.
The Beretta is probably the softest shooting 9mm pistol out there in my opinion. The delayed blowback system in it delays the movement of the slide slightly which mitigates recoil A LOT. The CZ is noticeably more snappy than the Beretta.
So, in my opinion, the Beretta is easier to shoot faster accurately than the CZ, but the CZ is also fairly easy to shoot fast.
Accuracy: This, hands down, goes to the CZ. Simply put, the CZ is a tack driver. I consistently shoot groups with it that you can cover with a nickel at 10 yards (and I don't shoot it that often anymore). While the Beretta is accurate also, due to the just so so sights on it, it makes it more difficult to be consistent with it like the CZ.
Capacity: The CZ with the factory metal baseplate Mec-Gar mags holds 16+1, whereas the Beretta is 15+1. Obviously, there's aftermarket mags, and parts available for both guns to extend the capacity.
Aftermarket: CZ has grown in popularity A LOT in the last few years so the aftermarket has grown quite a bit for it. There's virtually anything available for both. From holsters, to sights, to grips, etc. This is a wash IMO.
Factory sights: They both suck quite honestly. The CZ sights are relatively small and harder to pick up quickly, however, this does lend itself well for concealment since they wont snag on anything. That said, they are easily replaceable with quality sights.
The Beretta sights are also bad. Not hard to pick up, but not the easiest to align for precision shooting (the reason why it's not as inherently as accurate as the CZ). The other really crappy thing about the Beretta is that the front sight is not replaceable; it's part of the slide. So unless you plan on getting some machine work done, you're stuck with it. The rear sight is replaceable.
The safety: The CZ safety is your typical safety. If you're familiar with a 1911; you're familiar with the CZ. As long as you practice disengaging it when you draw, it's a non issue. The safety cannot be engaged unless the hammer is back, so you don't have to worry about it. Or you can carry it cocked and locked just like a 1911.
NOTE: The CZ's with the Omega trigger can be converted to decocker only quite easily if that's all you want.
The Beretta safety on the other hand sucks because not only is it mounted on the slide, but because it's a safety and decocker in one. In my opinion, it should be one or the other, but not both. Also, switching the safety off is not anywhere nearly as intuitive as a conventional safety. This is where Taurus really did some good by putting the safety on the frame where it belongs (in my opinion).
NOTE: Taurus PT92's are made on Beretta's old machines, that Taurus bought from Beretta when they left Brazil.
All in all, I think both are great guns, and you cant go wrong with either one. Both guns have seen combat and have proven to be reliable, and well suited for both the self/home defense, and duty use.
The CZ is functionally easier to use, however, with a lot of practice, using the 92FS/M9 safety will become second nature. But that is the key to it, you MUST practice, otherwise in a defense scenario the safety of the 92FS could prove quite the hindrance when your adrenaline is pumping and you can't get your gun into the fight fast enough. Whereas on the CZ, just use the safety as a thumb rest and you'll disengage it every time.
Hope this helps.
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it does not depend on gravity it is mechanically forced downward.