head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Practiced Mastery
Hand-crafted puzzle platformer about a renegade mechanic in a zealot world.

Optimization · Practiced Mastery
A first-person Metroid adventure spanning planets, steered with the Wii's motion-aimed cannon.
Iconoclasts leans Optimization (Practiced Mastery); Metroid Prime 3: Corruption leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Iconoclasts
Boss dodging and wrench-platforming precision
Metroid Prime 3: Corruption
Pointer aiming and Hypermode management in fights.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Iconoclasts
Bosses run fixed scripted phases
Metroid Prime 3: Corruption
Scripted bosses and pirates.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Iconoclasts
Little hidden beyond first-run surprises
Metroid Prime 3: Corruption
Deterministic worlds.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Iconoclasts
Puzzle solving and boss pattern mastery
Metroid Prime 3: Corruption
Scanning, sequencing, and multi-planet routing drive progress.
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.