head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Practiced Mastery
Series finale blending stealth with active battlefields and heavy cinematics.

Optimization · Practiced Mastery
The original open-exploration adventure where hidden secrets and dungeon knowledge are everything.
Metal Gear Solid 4: Guns of the Patriots leans Optimization (Practiced Mastery); The Legend of Zelda 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.
Metal Gear Solid 4: Guns of the Patriots
flexible gunplay alongside sneaking
The Legend of Zelda
Tight sword-poking against aggressive enemies
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 4: Guns of the Patriots
battlefield factions act on scripts
The Legend of Zelda
Enemies move on fixed or random patterns
The Legend of Zelda leans a little harder on variance, though the gap is small.
Metal Gear Solid 4: Guns of the Patriots
mid-battle chaos mostly cosmetic
The Legend of Zelda
Hidden caves and burn-every-bush secrets
The Legend of Zelda leans a little harder on optimization, though the gap is small.
Metal Gear Solid 4: Guns of the Patriots
camo, gear, and route knowledge per act
The Legend of Zelda
Dungeon order, item routing, and secret knowledge
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.