head to head
Fire Emblem Engage asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
Maximizing Emblem synergies and inherited skills to dismantle precisely scripted enemy maps.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Fire Emblem Engage leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans a little harder on execution, though the gap is small.
Fire Emblem Engage
Turn-based; Engage ring timing is menu-driven not reactive
Portal 2
Portal placement requires some precision but timing is lenient.
Fire Emblem Engage leans a little harder on reads, though the gap is small.
Fire Emblem Engage
Scripted enemy phases never adapt to player tendencies
Portal 2
No opponent; puzzles are static.
Fire Emblem Engage leans clearly harder on variance.
Fire Emblem Engage
Hit and avoid stats tighten variance; Engage mechanics are reliable
Portal 2
Puzzles are deterministic with no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Engage
Emblem pairing, skill inheritance, and unit positioning are exhaustively solvable
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.