head to head
EVE Online asks more than DEFCON, and the gap is optimization.

Optimization · Mind & Math
A nuclear strategy game testing cold optimization and the timing of betrayal.

Optimization · Mind & Math
A player-driven economy and political simulation where optimal doctrine-building and reading human opponents decide outcomes.
DEFCON leans Optimization (Mind & Math); EVE Online leans Optimization (Mind & Math).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
DEFCON
Issuing orders needs no dexterity, only attention
EVE Online
Clicking modules demands little physical precision
EVE Online leans a little harder on reads, though the gap is small.
DEFCON
Timing betrayals and first strikes against humans is the heart
EVE Online
Player corporations and fleet FC decisions involve deep human prediction
EVE Online leans a little harder on variance, though the gap is small.
DEFCON
Hidden submarine and fleet positions reward scouting
EVE Online
Market prices and intel gaps are meaningful hidden information
EVE Online leans clearly harder on optimization.
DEFCON
Launch timing, placement and alliance math are deeply solvable
EVE Online
Industry chains, fleet doctrines, and trade routes are deeply solvable systems
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.