Building comparison
head to head
Plants vs. ZombiesvsPortal
Neither is simply harder - they are hard in different places. Plants vs. Zombies demands more variance; Portal demands more execution.
Plants vs. Zombies
Optimization · Pure Optimization
Lane defense classic about managing a sun economy against shambling waves.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Plants vs. Zombies leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Plants vs. ZombiesPortal
Axis by axis
Execution1 vs 4
Portal leans clearly harder on execution.
Plants vs. Zombies
Clicking to plant, minimal pressure
Portal
Portal placement timing modest.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies
Zombie waves follow set compositions
Portal
No adversary modeling player.
Variance3 vs 0
Plants vs. Zombies leans clearly harder on variance.
Plants vs. Zombies
Wave timing and lane pressure vary mildly
Portal
Deterministic chambers; no randomness.
Optimization8 vs 8
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies
Sun economy and lane setups are near-solvable
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.