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 · Grand Arena
Hero shooter with team-up ability synergies.

Execution · Grand Arena
Elite-focused 40K RTS where power node pressure and ability-chain timing test both micro and opponent reading.
Marvel Rivals leans Execution (Grand Arena); Warhammer 40,000: Dawn of War III leans Execution (Grand Arena).
Marvel Rivals leans a little harder on execution, though the gap is small.
Marvel Rivals
Hero aim and ability timing
Warhammer 40,000: Dawn of War III
Elite ability chains and walker micro have strict timing demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel Rivals
Team-fight cooldown trading is prediction
Warhammer 40,000: Dawn of War III
Three-race elite compositions must be scouted and countered
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel Rivals
Map and team comp roll affects
Warhammer 40,000: Dawn of War III
Power node variance and ability cooldown RNG add moderate uncertainty
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel Rivals
Hero synergies and team-up combos deep
Warhammer 40,000: Dawn of War III
Elite point allocation and doctrine selection are defined optimization problems
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.