My employer is Bull, a French computer company. I work in Phoenix, AZ. About 5 years ago, I was on the High Performance Computer (HPC) project.
At the time, the Chinese took the lead in the public HPC MIPS race. Our company had and entry in the top 10. The Chinese entry was tuned to the test and was less useful for general computation, but it ran the test benchmark really well. The entry by Bull was on of the better general purpose entries.
I have not followed the situation recently. So I cannot say whether the Chinese machines have improved their usefulness in the interim as opposed to just cranking the flops.