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
A licensed platformer testing basic jump timing and level memorisation.

Execution · Practiced Mastery
A cinematic side-scrolling shooter about a revolutionary chicken commando.
Disney's Tarzan leans Execution (Practiced Mastery); Rocketbirds: Hardboiled Chicken 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.
Disney's Tarzan
Jump timing and projectile tossing carry the platforming
Rocketbirds: Hardboiled Chicken
platforming and shooting precision needed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Disney's Tarzan
Jungle enemies run fixed simple patterns
Rocketbirds: Hardboiled Chicken
scripted enemy AI, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Disney's Tarzan
Collectible placements fixed; nothing meaningfully random
Rocketbirds: Hardboiled Chicken
minimal randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Disney's Tarzan
Memorising level layouts and letter locations completes it
Rocketbirds: Hardboiled Chicken
level routing and weapon use
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.