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
Family-focused action roguelike with persistent narrative progression between runs.

Optimization · Practiced Mastery
Action RPG prequel to FFVII whose combat spins a slot machine for buffs.
Children of Morta leans Optimization (Practiced Mastery); Crisis Core: Final Fantasy VII 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.
Children of Morta
Action combat with dodges and combos but forgiving timing.
Crisis Core: Final Fantasy VII
real-time dodging and attack timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Children of Morta
Enemies are scripted hack-and-slash fodder.
Crisis Core: Final Fantasy VII
no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Children of Morta
Procedural floors and drops add modest swing.
Crisis Core: Final Fantasy VII
DMW slot reels randomize limit breaks and levels
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Children of Morta
Family upgrade tree and character synergies reward planning.
Crisis Core: Final Fantasy VII
materia fusion is a deep solvable system
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.