head to head
EVE Online asks more than Hearts of Iron IV, and the gap is reads.

Optimization · Mind & Math
A player-driven economy and political simulation where optimal doctrine-building and reading human opponents decide outcomes.

Optimization · Pure Optimization
WWII grand strategy: templates, production, and focus paths.
EVE Online leans Optimization (Mind & Math); Hearts of Iron IV leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
EVE Online
Clicking modules demands little physical precision
Hearts of Iron IV
pausable, micromanagement-heavy
EVE Online leans clearly harder on reads.
EVE Online
Player corporations and fleet FC decisions involve deep human prediction
Hearts of Iron IV
PvP partly, mostly scripted AI
EVE Online leans a little harder on variance, though the gap is small.
EVE Online
Market prices and intel gaps are meaningful hidden information
Hearts of Iron IV
focus tree branches, events
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
EVE Online
Industry chains, fleet doctrines, and trade routes are deeply solvable systems
Hearts of Iron IV
division templates and production solved
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.