Is there any Nagler, Panoptic clone out there? Which brand? Anyway, I am not saying that the Chinese products are that bad (they are bang for the buck), it is just that they cannot be at that level currently. They will not be just as good. Maybe years down the road.
If they were just as good and so cheap, there should be Astrophysics, TMB, Tak clones already; if they can build these scopes just as good and way cheaper, I will get them.

Also, chinese manufacturing tolerances are not that good that is a fact. You need expensive machines and well trained people to produce good optics. Design is one, manufacturing is another. You can have a super design, but it cannot perform to spec if your manufacturing is not as accurate in tolerance. Also, even if they do steal the design or reverse engineer, it still require some design to reoptimize it to fit their production ability.
For example Newtonian mirrors. The Orion dobs are really cheap and they offer like >80 precent of the performance of premium dobs optically. Can they be the same level as premium newts. No , unless you are lucky to get one that has really good strehl ratio and surface finish level. For price/ performance I would say the Chinese optics are good. However, they will not be 'just as good'. Anyway, people pay a lot more for that 10 percent difference. Whether it is worth it or not is another story.