head to head
Guild Wars 2 asks more than Red Dead Redemption 2, and the gap is reads.

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

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Guild Wars 2 leans Optimization (Practiced Mastery); Red Dead Redemption 2 leans Execution (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
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Guild Wars 2 leans clearly harder on reads.
Guild Wars 2
WvW and structured PvP feature real adaptive opponents
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Guild Wars 2 leans a little harder on variance, though the gap is small.
Guild Wars 2
Loot RNG is present but secondary to skill expression
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Guild Wars 2 leans clearly harder on optimization.
Guild Wars 2
Build crafting and rotation theory-crafting reward deep analysis
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.