Someone did this a while ago back when Ascendant wasn't even introduced yet, so I though I'd make an updated version. Got the data from eSports Tales, so there's probably some inaccuracies and, as I only took the cumulative percentage of players at or above each rank into account, several biases are certainly present due to the differences between playerbase characteristics -- Valorant pros play ranked, CS pros play Faceit --, player count of each game etc., so see this as a rough draft of what the skill differences could be.

Read top to bottom, left to right.

Sources: Valorant distribution and CS:GO distribution.

EDIT: Valorant distribution link was broken, now fixed.