As far as I know we don't have any way to objectively measure or compare "quality" or "coding performance" or "best" when looking at code produced by human programmers.
You may find this useful:
https://www.gitclear.com/coding_on_copilot_data_shows_ais_do...
Or this analysis if you don't want to sign up to download that white paper:
The two that I know of are SWE-bench and CodeElo. SWE-bench is oriented towards "real world" performance (resolution of GitHub issues), and CodeElo is oriented towards competitive programming (CodeForces).
https://www.swebench.com/
https://codeelo-bench.github.io/