head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Practiced Mastery
A 2.5D platformer with deep user-created content.

Execution · Practiced Mastery
An open-zone Sonic experiment with cyberspace stages.
LittleBigPlanet 3 leans Execution (Practiced Mastery); Sonic Frontiers leans Execution (Practiced Mastery).
Sonic Frontiers leans a little harder on execution, though the gap is small.
LittleBigPlanet 3
Floaty platforming with varied character moves
Sonic Frontiers
Boost-running and combat at speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
LittleBigPlanet 3
Scripted enemies
Sonic Frontiers
Scripted enemies
LittleBigPlanet 3 leans a little harder on variance, though the gap is small.
LittleBigPlanet 3
User levels vary wildly
Sonic Frontiers
Static open zones
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
LittleBigPlanet 3
Costume and prize-bubble routing
Sonic Frontiers
Skill tree and stat farming
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.