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
The console FPS landmark that introduced Master Chief and the ring world.

Execution · Practiced Mastery
A mobile soccer simulation game.
Halo: Combat Evolved leans Execution (Practiced Mastery); Real Soccer 2009 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.
Halo: Combat Evolved
Aim, grenade timing, and vehicle control
Real Soccer 2009
passing and shooting precision are core skills
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Halo: Combat Evolved
Multiplayer duels reward reading humans
Real Soccer 2009
AI defense has limited adaptive counterplay
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Halo: Combat Evolved
Covenant AI varies tactics slightly
Real Soccer 2009
minor randomness in ball physics/outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Halo: Combat Evolved
Weapon sandbox knowledge and encounter routing
Real Soccer 2009
formation and tactics are learnable
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.