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
An open-zone Sonic experiment with cyberspace stages.

Execution · Practiced Mastery
Lara's reboot blending cover shooting, climbing, and survival cinema.
Sonic Frontiers leans Execution (Practiced Mastery); Tomb Raider (2013) 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.
Sonic Frontiers
Boost-running and combat at speed
Tomb Raider (2013)
Bow aim, QTEs, and platforming timing matter.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Frontiers
Scripted enemies
Tomb Raider (2013)
Scripted enemy waves, no adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Frontiers
Static open zones
Tomb Raider (2013)
Minimal randomness in encounters.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sonic Frontiers
Skill tree and stat farming
Tomb Raider (2013)
Weapon upgrades and skill picks straightforward.
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.