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
Active dodge-heavy combat with a deep build system, tested against both scripted content and human opponents.

Optimization · Practiced Mastery
Turn-based artillery testing trajectory skill, positioning and outguessing human rivals.
Guild Wars 2 leans Optimization (Practiced Mastery); Worms Revolution leans Optimization (Practiced Mastery).
Guild Wars 2 leans a little harder on execution, though the gap is small.
Guild Wars 2
Dodge timing and active combat define moment-to-moment play
Worms Revolution
Manual grenade arcs and ninja-rope control reward practiced hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guild Wars 2
WvW and structured PvP feature real adaptive opponents
Worms Revolution
Human opponents hide worms and bait retaliation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Guild Wars 2
Loot RNG is present but secondary to skill expression
Worms Revolution
Crate drops and wind add turn-level luck
Guild Wars 2 leans a little harder on optimization, though the gap is small.
Guild Wars 2
Build crafting and rotation theory-crafting reward deep analysis
Worms Revolution
Positioning, water physics and weapon economy reward planning
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.