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.

Execution · Practiced Mastery
An action MMORPG where juggling combos and ability loadout optimisation carry raid performance.

Optimization · Practiced Mastery
Active dodge-heavy combat with a deep build system, tested against both scripted content and human opponents.
DC Universe Online leans Execution (Practiced Mastery); Guild Wars 2 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.
DC Universe Online
Combat juggling and precise block-counter timing are central
Guild Wars 2
Dodge timing and active combat define moment-to-moment play
Guild Wars 2 leans a little harder on reads, though the gap is small.
DC Universe Online
PvP arenas and legends exist as a real but secondary mode
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.
DC Universe Online
Gear drop variance is limited compared to loot-heavier games
Guild Wars 2
Loot RNG is present but secondary to skill expression
Guild Wars 2 leans a little harder on optimization, though the gap is small.
DC Universe Online
Power and loadout optimisation matter for elite raid content
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.