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 · Pure Mechanics
Linear military FPS about resisting an occupation of the United States.

Execution · Pure Mechanics
Kart drift control and track knowledge with item luck shaking up placements.
Homefront leans Execution (Pure Mechanics); SuperTuxKart leans Execution (Pure Mechanics).
SuperTuxKart leans a little harder on execution, though the gap is small.
Homefront
Standard shooter gunplay carries the campaign
SuperTuxKart
Drift control and line holding decide races
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Homefront
Multiplayer adds some human prediction
SuperTuxKart
Human online races reward mild item mind-games
SuperTuxKart leans a little harder on variance, though the gap is small.
Homefront
Scripted setpieces, little randomness
SuperTuxKart
Item box rolls shake up placements
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Homefront
Modest loadout and map knowledge layer
SuperTuxKart
Track shortcuts and kart choice reward study
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.