Before their recent adventure, Russia had over 11,000 tanks compared to the US's 8,000. Would you say that they had tank superiority?
Sure, one can say that comparing raw numbers is simplistic, but so is comparing vessels and tanks, or Russians and Chinese. We've certainly now seen that Russia is a paper tiger, at least excluding nukes, which kinda level everyone up. I don't think we know about China, them not being in any major conflicts where we could get data.
I have no expertise in the area, so if someone has more sources and analyses to read, I'm eager to learn about any data with contrary views. I'd sincerely like to learn more. What I've read so far suggests that China has newer and more modern vessels, and that we are falling behind with no real plans for attrition. I've also read that Aircraft carriers may not be, in the future, the force multipliers we see them as now, so us being superior there might not count for what we think it does.
On the other hand, China seems to prioritize "homeland security" as far as their fleet operations (hence all the corvettes, I guess). The US has experience all over all the oceans of the world.
I suppose much comes down to what kind of war it would be. It might (and I guess it has already started) be predominately non-kinetic Fifth Generation warfare, though it sure seems like that's an area where the CCP has us beat. Or it might be nukes and then everybody loses.
At any rate, as I said, I'm only commenting based on articles I have read. THis is an area where I'd like to do a lot more reading.