head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Reads · Grand Arena
Tests slow-melee dueling and predicting human extraction squads under loot RNG.

Reads · Competitive PvP
Open-world pirate game with PvPvE ship combat.
Dark and Darker leans Reads (Grand Arena); Sea of Thieves leans Reads (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dark and Darker
Slow melee timing, spacing and spell aim decide fights
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.
Dark and Darker
Third-partying, baiting and outplaying human squads is central
Sea of Thieves
PvP ship fights are pure mind games
Dark and Darker leans a little harder on variance, though the gap is small.
Dark and Darker
Loot rolls, spawns and circle placement shape every raid
Sea of Thieves
Server encounters, weather, loot vary
Dark and Darker leans a little harder on optimization, though the gap is small.
Dark and Darker
Gear economy, class builds and dungeon routes reward grinding knowledge
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.