No, you misunderstood me. I'm not saying that Iran has more soft power than China, but the truth is that the US is decades ahead of everyone else in soft power.
The internet, music industry, Hollywood, etc. Even when it comes to tourism, Europe is still decades ahead of Asia.
China is by far the least popular country in East Asia. Japan and South Korea are decades ahead of China. China is catching up with the US in science and technology, but that's not enough.
Even economically, China is still at least a decade behind the US. Maybe two decades.