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

Optimization · Light / Casual
A darkly satirical toy-burning game about feeding an endless fireplace.

Optimization · Light / Casual
A two-part visual novel that uses a conventional romance setup as a deliberate feint before pivoting to military sci-fi.
Little Inferno leans Optimization (Light / Casual); Muv-Luv leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Little Inferno
Drag items into a fire, that's it
Muv-Luv
Menu choices only; no physical demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Little Inferno
No opposition
Muv-Luv
Routes are fully scripted harem-to-military arcs
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Little Inferno
Combo names hint at discoverable pairings
Muv-Luv
Minimal hidden information in the first entry
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Little Inferno
Finding burn combos is a light solvable layer
Muv-Luv
Completing Muv-Luv and Unlimited to unlock Alternative is a light routing puzzle
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.