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 · Pure Mechanics
Arcade reflex shooting under timers with memorisable rescue routes.

Execution · Pure Mechanics
A DS spin-off where you befriend wild Pokemon by drawing unbroken loops around them with the stylus.
Alien Syndrome leans Execution (Pure Mechanics); Pokemon Ranger leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Syndrome
Dodging swarms under a bomb timer is pure arcade reflex
Pokemon Ranger
Circling Pokemon with the stylus without breaking the loop
Pokemon Ranger leans a little harder on reads, though the gap is small.
Alien Syndrome
Aliens swarm on fixed spawn logic
Pokemon Ranger
Capture targets move on set patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Syndrome
Hostage and weapon spots are unknown until learned
Pokemon Ranger
Movement patterns vary slightly per attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Syndrome
Routes to hostages and boss patterns are fully mappable
Pokemon Ranger
Poke Assist choices and capture order help
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.