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.

Execution · Competitive PvP
Asymmetric 4v1 shooter where hunters and monster constantly out-guess each other.

Execution · Grand Arena
Hero shooter with team-up ability synergies.
Evolve leans Execution (Competitive PvP); Marvel Rivals leans Execution (Grand Arena).
Marvel Rivals leans a little harder on execution, though the gap is small.
Evolve
Tracking shots and monster traversal skill
Marvel Rivals
Hero aim and ability timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Evolve
Asymmetric hunter-versus-monster mindgames never settle
Marvel Rivals
Team-fight cooldown trading is prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Evolve
Wildlife and map spawn noise
Marvel Rivals
Map and team comp roll affects
Marvel Rivals leans a little harder on optimization, though the gap is small.
Evolve
Perk loadouts and stage-up timing knowledge
Marvel Rivals
Hero synergies and team-up combos deep
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.