disagree.
they beat fnatic. fnatic played well. not to 100%, probably to 85%, but KC looked dominant. they won on fnatic's best map while losing both pistols in regulation. if they have the skill to beat fnatic, then they have the skill to beat anyone in the world.
re: this tournament - marteen, tomaszy, N4RRATE have not played an international LAN before (correct me if I'm wrong), and this is magnum's first return to a big stage since 2021 (again, correct me if I'm wrong) - I expected them to lose here, but I guarantee they will be top2 by champs, and I can easily see them winning champs.
N4RRATE is the best player in the world. magnum's calling will improve with time. everyone will get more consistent, ESPECIALLY with ENGH at the helm. your proposition that they will get worse because they 'worry more' about 'playing right' doesn't really track - when anyone learns a new agent at a high level, they study the fuck out of how the tippity top-level players use their kits, and mimic that until they've refined it.
then, they slightly tinker around until they create their own playstyle with the agent(s). that is to say - they will not be in their heads with 'OMG am I making the right play?!?!'; they will be thinking 'okay, can't do that!' and just iterate upon previous mistakes.