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 modern arcade flight game of high-speed dogfights, drones, and dramatic canyon runs.

Execution · Pure Mechanics
High-speed trick execution along optimised lines down fixed mountains.
Ace Combat 7: Skies Unknown leans Execution (Practiced Mastery); SSX leans Execution (Pure Mechanics).
SSX leans a little harder on execution, though the gap is small.
Ace Combat 7: Skies Unknown
Tight dogfighting and missile-dodge timing
SSX
Trick timing, landings and line control at speed are everything
Ace Combat 7: Skies Unknown leans a little harder on reads, though the gap is small.
Ace Combat 7: Skies Unknown
Campaign AI scripted; small PvP scene adds little
SSX
Rival AI racers are aggressive but mappable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ace Combat 7: Skies Unknown
Cloud cover gimmicks are learnable
SSX
Courses are fixed once learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ace Combat 7: Skies Unknown
Aircraft tree and loadout routing matter
SSX
Optimal trick lines and shortcut routing maximise score
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.