head to head
Fallout Tactics: Brotherhood of Steel asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
A squad-based post-apocalyptic tactics game where AP efficiency and burst-fire builds determine mission success.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Fallout Tactics: Brotherhood of Steel leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout Tactics: Brotherhood of Steel
Real-time optional combat mode adds positioning pressure over pure turn-based
Portal 2
Portal placement requires some precision but timing is lenient.
Fallout Tactics: Brotherhood of Steel leans a little harder on reads, though the gap is small.
Fallout Tactics: Brotherhood of Steel
All enemy squads run fixed scripted patrol and engagement routines
Portal 2
No opponent; puzzles are static.
Fallout Tactics: Brotherhood of Steel leans clearly harder on variance.
Fallout Tactics: Brotherhood of Steel
Enemy squad compositions and map layouts are hidden on first approach
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.
Fallout Tactics: Brotherhood of Steel
Squad AP optimization and burst-fire perk stacking define dominant strategies
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.