head to head
Fallout Tactics: Brotherhood of Steel asks more than Portal, 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
The portal-gun puzzle game whose solutions are everything.
Fallout Tactics: Brotherhood of Steel leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans a little harder on execution, though the gap is small.
Fallout Tactics: Brotherhood of Steel
Real-time optional combat mode adds positioning pressure over pure turn-based
Portal
Portal placement timing modest.
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
No adversary modeling player.
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
Deterministic chambers; no randomness.
Fallout Tactics: Brotherhood of Steel leans a little harder on optimization, though the gap is small.
Fallout Tactics: Brotherhood of Steel
Squad AP optimization and burst-fire perk stacking define dominant strategies
Portal
Pure puzzle-solving optimization.
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.