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

Optimization · Practiced Mastery
A study-level combat flight sim where mastering each aircraft's real systems is the price of entry.

Optimization · Practiced Mastery
Active dodge-heavy combat with a deep build system, tested against both scripted content and human opponents.
DCS World leans Optimization (Practiced Mastery); Guild Wars 2 leans Optimization (Practiced Mastery).
DCS World leans a little harder on execution, though the gap is small.
DCS World
Precise stick-and-throttle handling and BFM have a high ceiling.
Guild Wars 2
Dodge timing and active combat define moment-to-moment play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DCS World
Multiplayer dogfights against humans reward genuine prediction.
Guild Wars 2
WvW and structured PvP feature real adaptive opponents
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
DCS World
Sensor fog of war and unseen contacts hide information.
Guild Wars 2
Loot RNG is present but secondary to skill expression
DCS World leans a little harder on optimization, though the gap is small.
DCS World
Full-fidelity avionics, weapons and tactics are a vast learnable system.
Guild Wars 2
Build crafting and rotation theory-crafting reward deep analysis
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.