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
Claustrophobic post-apocalyptic shooter where bullets double as currency.

Execution · Practiced Mastery
Open-zone Metro entry trading tunnels for a cross-Russia survival journey.
Metro 2033 leans Execution (Practiced Mastery); Metro Exodus 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.
Metro 2033
scarce-ammo gunfights punish sloppy aim
Metro Exodus
open-zone gunplay and stealth takedowns
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metro 2033
mutants and bandits follow scripts
Metro Exodus
human and mutant AI is mappable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metro 2033
hidden moral points and supplies first run
Metro Exodus
weather and patrols add mild uncertainty
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metro 2033
ammo-as-currency economy and stealth routing
Metro Exodus
crafting, scavenging, and approach 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.