Building comparison
head to head
Crystal DefendersvsPortal
Neither is simply harder - they are hard in different places. Crystal Defenders demands more variance; Portal demands more execution.
Crystal Defenders
Optimization · Pure Optimization
A Final Fantasy tower defense about optimal unit placement against fixed waves.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Crystal Defenders leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Crystal DefendersPortal
Axis by axis
Execution1 vs 4
Portal leans clearly harder on execution.
Crystal Defenders
No twitch element; placement is deliberate
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.
Crystal Defenders
Enemies follow fixed paths, no adaptation
Portal
No adversary modeling player.
Variance2 vs 0
Crystal Defenders leans clearly harder on variance.
Crystal Defenders
Enemy waves are predetermined once learned
Portal
Deterministic chambers; no randomness.
Optimization9 vs 8
Crystal Defenders leans a little harder on optimization, though the gap is small.
Crystal Defenders
Unit placement and upgrade economy is the whole 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.