Well, I see 'minor' differences.

One is found at the head of both statues. The 'exhaust' shaped as a helmet doesn't seem to be similar in both pictures.

Also note the calves of both of them and see that the Japanese one has more detail than the Chinese one.

Not to mention, the Chinese Gundam has very obvious lines that could be from a frame to put up the panels, while the Japanese can't be seen but made 'some' of the frames look like how they 'actually' made a Gundam if they were mechanics.