All measures are imperfect, that doesn't mean it's totally meaningless and should be disregarded. And it also seems like you're referencing outdated data, as the cost of battery storage seriously decreased in 2025. But by any measure i can find, nuclear is significantly more expensive than renewables+storage. Regarding China, their data is generally not trustworthy on any topic, but yes I'm sure nuclear can cost a lot less there than elsewhere when you can steamroll over the citizens that would be effected by a powerplant's construction, operation, and waste storage.

I'm not an expert in this at all, but I believe that private capital isn't investing their own money in new nuclear construction, and that tells the whole story about the cost per watt of nuclear. If nuclear was cheaper per watt after all costs were considered then private capital would be building new nuclear, but they aren't, so that means it clearly isn't.

EDIT

I just looked at your link and it pretty clearly says the opposite of everything you said. Quote from the intro of your article:

[renewable energy] largely prevails over nuclear in China, the United States, and Europe – the world’s three largest power systems, as well as in Japan.

And

New wind and solar projects are much cheaper than new reactors.