The problem of course is going to be comparable performance vs already benched chips like the Intel 10th Gen and Zen 2, so it would be a lot of work. Basically have to re-bench most of what was released in the last 18 months, so like 5x more work than just benching the Zen 3 using the standard test bed. I do agree it would be more relevant.
Having said that, the 720P benchmarks with a 2080Ti are probably representative of max performance with little or no GPU limiting factors.
Compared to the 10700K - the results aren't much different with only 1% fps gain from a 5800X or 5900X and essentially a tie with a 5600X in games. The 10700K actually beats the 5600X on CPU tests (moar cores, higher freq).
I thought the 5600X would be a winner here, but IMO the 10700K is a much better deal as it generally outperforms it and has much more OC headroom (you can easily get another 5% out of the 10700K, widening that gap). It can also benefit from higher speed memory, as most Intel chips can.
That said, the 5800X / 5900X are clear winners in overall performance at the high end. If one is looking for a $500ish CPU right now for a new build, these two seem to be the clear front runners. The 10850K and 10900K just can't compete at their current prices.
Final statement: Rocket Lake is probably going to destroy this, Zen 3 is too close to Gen 10 performance.