Depends on the criteria if you mean who was the best cs player to move to valorant I'd probably say ethan or nitro if you mean who would end up having the best peaks probably tenz (it's definitely someone from NA let's be honest)
A surprising amount of Korean players were in cs before Val came out.
Stax was probably the best CS player that came to Val from the KR scene, and then f0rsaken was super young but really hyped up because he was nuts + xccurate’s brother
In terms of success across both games, probably someone like Ethan or ScreaM for NA and EMEA respectively. TenZ, Shroud, Tarik, Nitr0, FNS are all kinda HMs atleast in terms of the NA scene, I can't speak on EMEA or APAC players.
It’s was solo and peri who came from cs during NUTURN roster not to forget the whole prx roster including alecks came from cs except for jingg and new members
it is so very easily ethan, jampii and tenz were just young players who never really did anything in cs, nitr0 had the best career but was a shell of himself when he moved to val, (same goes for scream with a worse career than nitr0 but still better than jampii and tenz)
Discord