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
Pulpy arcade dogfighting game set in an alternate 1930s of air pirates.

Execution · Practiced Mastery
A nanosuit-powered FPS where you choose between cloaked stealth and armored assault through a ruined New York.
Crimson Skies: High Road to Revenge leans Execution (Practiced Mastery); Crysis 2 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.
Crimson Skies: High Road to Revenge
dogfighting aim and stunt flying carry combat
Crysis 2
Aimbot trivialises every firefight; aim and movement carry it
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crimson Skies: High Road to Revenge
AI pilots follow mappable patterns
Crysis 2
Scripted Ceph and soldiers follow fixed patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crimson Skies: High Road to Revenge
some scripted surprises on first play
Crysis 2
Mostly known encounters with mild patrol randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crimson Skies: High Road to Revenge
plane choice and mission routing are learnable
Crysis 2
Suit energy management and choosing stealth-versus-armor approaches
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.