Of all the co2 pistols I have owned, I have not really seen a difference between co2 and green gas in terms of materials used and "reinforcements". This only applies for metal pistols.
With the CZ series, the co2 will wear away the mag catch, especially the for cz75 and shadow 1. For the shadow 2, I only briefly had it but it others have said the mag catch improved on that version. But ye the cz series will hold up to co2 easily. So no need to worry about it. The ones you should worry about are pistols like glock 17/18/19 etc because the metal is thin where the recoil rod goes through on the slide. That is the only pistol slide that has ever broke on me from using co2. The glock 34 slide with the thicker front fairs a lot better.
So all in all, if there's a co2 option for the pistol, it should be fine. Just watch out for thin metal parts like glock 17 slides as pot metal won't hold up to that abuse for long.