head to head
Metal Gear Solid Delta: Snake Eater asks more than Portal 2, and the gap is execution.

Optimization · Pure Optimization
Solving guard patrols and survival systems through planned stealth routing.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Metal Gear Solid Delta: Snake Eater leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Metal Gear Solid Delta: Snake Eater leans clearly harder on execution.
Metal Gear Solid Delta: Snake Eater
Stealth movement and CQC need care, not twitch mastery
Portal 2
Portal placement requires some precision but timing is lenient.
Metal Gear Solid Delta: Snake Eater leans a little harder on reads, though the gap is small.
Metal Gear Solid Delta: Snake Eater
Guards follow vision-cone scripts, not adaptive minds
Portal 2
No opponent; puzzles are static.
Metal Gear Solid Delta: Snake Eater leans clearly harder on variance.
Metal Gear Solid Delta: Snake Eater
Patrol routes unknown only until observed
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
Metal Gear Solid Delta: Snake Eater
Camo, routing, food and boss knowledge solve every encounter
Portal 2
Solving the puzzle's logic IS the entire game.
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.