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

Execution · Practiced Mastery
A pattern-memorisation beat 'em up with light search-and-rescue routing.

Execution · Practiced Mastery
Wrangling high-speed 3D movement through fixed stages and boss scripts.
Michael Jackson's Moonwalker leans Execution (Practiced Mastery); Sonic Adventure DX: Director's Cut leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Michael Jackson's Moonwalker
Dodging and dance-attack timing carry each stage
Sonic Adventure DX: Director's Cut
High-speed 3D control and jank-wrangling demand real hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Michael Jackson's Moonwalker
Enemies follow simple fixed patterns
Sonic Adventure DX: Director's Cut
Chaos bosses run fixed phase scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Michael Jackson's Moonwalker
Child locations vary slightly per playthrough
Sonic Adventure DX: Director's Cut
Stage layouts and upgrades never change
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Michael Jackson's Moonwalker
Memorising rescue spots and enemy placements solves levels
Sonic Adventure DX: Director's Cut
Speedrun routing and A-rank paths are learnable systems
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.