head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A loose sandbox of shooting and demolition with modest aiming demands and light economy play.

Execution · Practiced Mastery
A survival-horror action game where managing scarce resources against scripted horrors is key.
Mercenaries 2: World in Flames leans Execution (Practiced Mastery); Resident Evil 3 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mercenaries 2: World in Flames
Third-person shooting and vehicle handling carry the moment-to-moment combat
Resident Evil 3
aim and dodge timing against threats
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mercenaries 2: World in Flames
Scripted AI factions never model the player
Resident Evil 3
Nemesis is scripted, not truly adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mercenaries 2: World in Flames
Open-world chaos adds noise but little hidden information
Resident Evil 3
item and enemy spawn randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mercenaries 2: World in Flames
Faction money, contracts and gear unlocks reward light planning
Resident Evil 3
resource management and routing solvable
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.