head to head
Neither is simply harder - they are hard in different places. Counter-Strike: Global Offensive demands more execution; Sea of Thieves demands more variance.

Execution · Competitive PvP
Definitive competitive tactical FPS balancing aim mastery with team strategy.

Reads · Competitive PvP
Open-world pirate game with PvPvE ship combat.
Counter-Strike: Global Offensive leans Execution (Competitive PvP); Sea of Thieves leans Reads (Competitive PvP).
Counter-Strike: Global Offensive leans clearly harder on execution.
Counter-Strike: Global Offensive
Spray control and flick precision at the top
Sea of Thieves
Ship sailing and naval gunnery require hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Global Offensive
Anti-stratting and mid-round adaptation
Sea of Thieves
PvP ship fights are pure mind games
Sea of Thieves leans clearly harder on variance.
Counter-Strike: Global Offensive
Information hidden until contact
Sea of Thieves
Server encounters, weather, loot vary
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Global Offensive
Utility lineups, economy, and default strats
Sea of Thieves
Routes, loadouts, ship setups solvable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.