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

Optimization · Practiced Mastery
Open-world survival action about outrunning massive zombie hordes on a motorcycle.

Optimization · Practiced Mastery
Series finale blending stealth with active battlefields and heavy cinematics.
Days Gone leans Optimization (Practiced Mastery); Metal Gear Solid 4: Guns of the Patriots leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Days Gone
horde shooting and bike handling under pressure
Metal Gear Solid 4: Guns of the Patriots
flexible gunplay alongside sneaking
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Days Gone
freaker AI is scripted swarm logic
Metal Gear Solid 4: Guns of the Patriots
battlefield factions act on scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Days Gone
patrols and weather shift encounters slightly
Metal Gear Solid 4: Guns of the Patriots
mid-battle chaos mostly cosmetic
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Days Gone
horde routing, traps, and gear prep decide fights
Metal Gear Solid 4: Guns of the Patriots
camo, gear, and route knowledge per act
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.