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

Optimization · Pure Optimization
The infamous Atari 2600 adventure that is trivial once its obscure rules are known.

Optimization · Pure Optimization
Sci-fi thriller played as the station AI solving its own crisis.
E.T. the Extra-Terrestrial leans Optimization (Pure Optimization); Observation 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.
E.T. the Extra-Terrestrial
Clumsy pit navigation, little dexterity
Observation
Camera control and interface manipulation
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
E.T. the Extra-Terrestrial
No adaptive opposition
Observation
Events are fully authored
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
E.T. the Extra-Terrestrial
Item locations vary per game
Observation
Mystery unknown until uncovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
E.T. the Extra-Terrestrial
Knowing the obtuse zone rules solves it quickly
Observation
Systems puzzles and station schematics solving
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.