head to head
Anomaly 2 asks more than Portal, and the gap is reads.

Optimization · Pure Optimization
A reverse tower defense testing convoy routing and unit composition against fixed defensive layouts.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Anomaly 2 leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans a little harder on execution, though the gap is small.
Anomaly 2
Steering the commander and ability drops needs light real-time hands
Portal
Portal placement timing modest.
Anomaly 2 leans clearly harder on reads.
Anomaly 2
Tower-offense versus humans in multiplayer adds some prediction
Portal
No adversary modeling player.
Anomaly 2 leans a little harder on variance, though the gap is small.
Anomaly 2
Campaign tower layouts are fixed and learnable
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.
Anomaly 2
Convoy composition, routing, and morph timing are the real test
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.