CZ-75 is hardly a P210 clone, aside from the rail setup it is a completely different gun. There are no P210 clones, and there would be no point in buying one... the design is sound, but no better than any others. It is the quality of workmanship, hand fitting and materials that set the P210 apart from everything else.
Having shot various P210s and owned a Danish military M49, I can tell you there were the following differences:
1. The M49 I had was not as tight as a commercial P210, but it had been shot so much that this was as likely caused by use rather than any design difference. It was still tighter than most production handguns, and vastly smoother than most expensive 1911s. The slide-to-frame fit was still tight enough that you had to use light lubricating oils; greases would gum up the action and induce malfuctions.
Interestingly enough, this was the ONLY way I ever found to cause the gun to not work; it would work dirty and would feed hollowpoints just fine. Wincehster 127gr +P+ worked great out of that gun.
2. The trigger was marginally heavier than a commercial P210, about 4 pounds instead of 3.5ish. That could have been intentional, or it could have been just a fluke or function of age. The trigger was still better than any custom 1911 I've handled to date, aside from some very expensive custom-built bullseye guns.
Otherwise, the guns are identical. They were all made by Sig in Switzerland by the same folks, just the markings and minor details are different. The main real difference is that the M49 guns were issed and used, but functionally they are still superb and are truly built like tanks. The one time I shot a respectable 25 yard bullseye score was with a M49, cheap S&B ammo and alot of practice... even considering their age and use, they are superbly accurate.