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

Optimization · Practiced Mastery
Galaxy-spanning space sim about flight and trade.

Optimization · Pure Optimization
An ARPG-MMO blending action execution with brutal gear optimization.
Elite Dangerous leans Optimization (Practiced Mastery); Lost Ark 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.
Elite Dangerous
Flight controls, docking, combat aim
Lost Ark
Action combat demands mechanical precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Elite Dangerous
Light PvP reads, mostly PvE
Lost Ark
Raid bosses are scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Elite Dangerous
Procedural galaxy, mission variance
Lost Ark
Honing and gear RNG is notorious
Lost Ark leans a little harder on optimization, though the gap is small.
Elite Dangerous
Ship build, trade routes, engineering grind
Lost Ark
Build, engravings, and rotations near-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.