head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Light / Casual
A pack-in 3D platformer celebrating PlayStation history.

Optimization · Practiced Mastery
A four-player Wii Kirby romp gathering ship parts for the stranded alien Magolor.
Astro's Playroom leans Execution (Light / Casual); Kirby's Return to Dream Land leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Astro's Playroom
Very forgiving platforming
Kirby's Return to Dream Land
Easygoing main game; EX mode adds modest demands
Astro's Playroom leans a little harder on reads, though the gap is small.
Astro's Playroom
Scripted enemies
Kirby's Return to Dream Land
Bosses are pattern-scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Astro's Playroom
Static levels
Kirby's Return to Dream Land
Energy sphere hiding spots are static secrets
Kirby's Return to Dream Land leans a little harder on optimization, though the gap is small.
Astro's Playroom
Collectible completion
Kirby's Return to Dream Land
Super ability timing and sphere collection are solvable
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.