head to head
Last Epoch asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
An ARPG where build crafting and skill trees define success.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Last Epoch leans Optimization (Pure Optimization); Portal 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.
Last Epoch
Action combat, modest mechanical demands
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Last Epoch
No adaptive opponents
Portal
No adversary modeling player.
Last Epoch leans clearly harder on variance.
Last Epoch
Loot affixes and crafting outcomes vary
Portal
Deterministic chambers; no randomness.
Last Epoch leans a little harder on optimization, though the gap is small.
Last Epoch
Build planning is the entire game
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.