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 · Twitch Chaos
The desert-set sequel to Alto's Adventure, adding balloons and wall rides to the endless ride.

Execution · Pure Mechanics
Touch-screen reaction speed against a randomised barrage of microgames.
Alto's Odyssey leans Execution (Twitch Chaos); WarioWare: Touched! leans Execution (Pure Mechanics).
WarioWare: Touched! leans a little harder on execution, though the gap is small.
Alto's Odyssey
Trick chains and wall-ride timing
WarioWare: Touched!
Instant stylus reactions to five-second prompts are everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Alto's Odyssey
No opponents
WarioWare: Touched!
No opponent - just escalating microgame speed
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Alto's Odyssey
Procedural desert biomes vary each run
WarioWare: Touched!
Random microgame order demands instant recognition
Alto's Odyssey leans a little harder on optimization, though the gap is small.
Alto's Odyssey
Light goal and combo systems
WarioWare: Touched!
Each microgame is trivially solvable once recognised
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.