There is no reason to believe China is technologically 'ahead' of US about this. Not based upon a few accidents or the numbers of successful launches.I doubt that. The Chinese already have the lead in this tech. They will deploy it much earlier than US.
All test launches are rigged tests. Anyone whoever worked in R/D and/or manufacturing know this fact. For missile testings, most launches are destructive tests, meaning the launch vehicle and the load are usually destroyed in the mission. That means each test launch must be selective in what kind of data are we looking for. So the number of successful launches alone are no guaranteed indicators of being 'ahead' of the competition. For all we know, the American version is advanced enough that ours requires less test launches than the Chinese version in order to certify deployment.
This mishap seems to be more related to the rocket than for the test weapon itself. The fact that the launch was aborted a few seconds after lift off means the safety mechanisms were better than excellent. Either it auto-destruct based upon certain launch data, or the system was sophisticated enough to inform Control that the entire vehicle was heading towards uncontrolled flight and the human operator reacted appropriately. How a test launch failed and the response mechanisms are just as indicative of the sophistication of the program as successful launches.

