You guys are trying to read way too much from a single data point. J10Cs coming up on top this year by itself does not categorically prove it to be the best non-stealth fighter in the PLAAF.
In previous years golden helmets, there have been times when J10s dominated one year and J11s the next. It’s only if J10Cs dominate year after year for at least 2-3 years that we can start to draw any conclusions on the respective capacities of the aircrafts themselves.
What I do not see even considered is often cited as the most important direct factor in air combat outcomes - pilot skill.
People often seem to think of the PLAAF as some giant homogeneous clone factory where everyone does everything exactly the same across China, but the very fact that we have so much variation in results from Golden Helmets proves that lie.
I think PLAAF regiments gets a surprising amount of leeway to innovate and deviate from standard doctrine if that improves their combat effectiveness.
After each year’s Golden Helmets, the winners write up their winning formula, which is then made compulsory reading for all other PLAAF fighter units, and that then becomes a core part of next year’s training syllabus, and in turn may inspire new tactics and strategies in other units who then go on to win it the next year, so on and so forth to create a positive feedback loop on continuous improvement, which is imo, a, if not the core point of golden helmets.
I think the confusion from some other people is the idea that J-10C could defeat J-16 in a domain like BVR, which reflects what their underlying belief surrounding J-10C and J-16's capabilities in BVR on a platform vs platform basis are.
I.e.: there may be some belief that J-16 somehow has some kind of inherent platform superiority in the BVR domain vs J-10C on a platform to platform basis. OTOH I don't think there is any meaningful difference between the two.
IMO the results of these sort of engagements/exercises can sometimes be "reflective" of inherent platform capability but often is not.
However, there are also some engagements/exercises as well as some "matchups" when some results can be quite easily predicted due to differences in inherent platform capability that are very difficult to be made up by pilot skill. For example, in the BVR domain I think it is a foregone conclusion that an aircraft like J-20 will be able to dominate pre 5th generation aircraft on an individual platform to platform basis just like how a 4+ generation aircraft like J-16 or J-10C will have notable advantages against J-11B or J-10A, or how aircraft like J-11B or J-10A (or Gripen C for that matter) would have notable advantages vs say, Su-27SK/J-11A in the BVR domain as well.
As far as J-10C and J-16 goes, I think on a platform vs platform level neither has any sort of inherent insurmountable advantage or disadvantage, and as I wrote above, "between J-10C and J-16 in particular, it is not unrealistic to imagine either of them being able to win a particular series of engagements. For all we know the results may be reversed next year" -- and that could reflect the tactics the pilots one year use versus another, etc.
And again, we do not know the margin of victory, which may have been small or large, which we don't have any information on.
On a tangent, if/when J-20 participates in Golden Helmet in the near future (if it does so at all), and if/when it likely wins versus the competition, I think people would quite reasonably attribute that significantly to the inherent platform advantages of J-20 vs its pre 5th generation counterparts, and I think most people would likely suspect that its margin of victory was quite high -- which IMO would not be unreasonable.
But with this news of J-10C "winning" Golden Helmet, some people seem to have believed that it has also enjoyed some kind of large margin of victory and that it was due to inherent platform advantage, which IMO is a bit of an overreach and not consistent with what we know about the comparison of J-10C vs its 4+ generation counterparts in the PLAAF.
I suppose this is my way of saying that sometimes we can speculate and extrapolate and take away some datapoints from limited information like the results of a Golden Helmet exercise, but sometimes we are unable to extrapolate much at all -- and however much we can extrapolate out is ultimately context and platform dependent.