head to head
M1 Tank Platoon asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
A tank combat sim mixing direct gunnery with platoon-level tactical command.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
M1 Tank Platoon leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans a little harder on execution, though the gap is small.
M1 Tank Platoon
Aiming the tank gun matters but isn't twitch-decisive
Portal
Portal placement timing modest.
M1 Tank Platoon leans clearly harder on reads.
M1 Tank Platoon
Enemy AI is scripted, not adapting to you
Portal
No adversary modeling player.
M1 Tank Platoon leans clearly harder on variance.
M1 Tank Platoon
Fog-of-war and scripted-unknown enemy positions
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
M1 Tank Platoon
Platoon coordination and tactical positioning win battles
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.