head to head
Dead Rising asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
Mall zombie sandbox where a strict 72-hour schedule turns survival into a routing puzzle.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Dead Rising 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.
Dead Rising
Crowd-clearing melee and psychopath dodging are modestly demanding
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.
Dead Rising
Zombies and psychopaths follow fixed scripts
Portal
No adversary modeling player.
Dead Rising leans clearly harder on variance.
Dead Rising
Survivor AI pathing and zombie crowds add run noise
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.
Dead Rising
72-hour clock makes routing, scheduling, and PP farming the 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.