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

Optimization · Practiced Mastery
Choreographing simultaneous character abilities with precise timing to solve intricate stealth puzzles.

Optimization · Practiced Mastery
Galaxy-spanning space sim about flight and trade.
Desperados III leans Optimization (Practiced Mastery); Elite Dangerous leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Desperados III
Simultaneous pause-and-execute actions demand precise timing coordination
Elite Dangerous
Flight controls, docking, combat aim
Elite Dangerous leans a little harder on reads, though the gap is small.
Desperados III
Enemy patrols are fully scripted; no adaptive opposition
Elite Dangerous
Light PvP reads, mostly PvE
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Desperados III
Guard patrol overlap creates some hidden-state uncertainty early on
Elite Dangerous
Procedural galaxy, mission variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Desperados III
Finding the ideal simultaneous action sequence per map is the core puzzle
Elite Dangerous
Ship build, trade routes, engineering grind
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.