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 · Pure Mechanics
A top-down shmup testing dodging and aiming against memorizable bullet patterns.

Execution · Pure Mechanics
A relentless wave-clearing shooter that tests sustained aim and movement against massive scripted enemy crowds.
Alltynex Second leans Execution (Pure Mechanics); Painkiller (2004) leans Execution (Pure Mechanics).
Alltynex Second leans a little harder on execution, though the gap is small.
Alltynex Second
Bullet-hell dodging and aiming are the whole skill
Painkiller (2004)
Constant crowd-control movement against overwhelming enemy counts demands fast aim
Alltynex Second leans a little harder on reads, though the gap is small.
Alltynex Second
Bosses are fixed patterns, not adaptive
Painkiller (2004)
All enemies are scripted waves with fixed attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Alltynex Second
Patterns memorizable, little true randomness
Painkiller (2004)
Enemy counts and placements are fixed with minimal unknown elements
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Alltynex Second
Learning safe routes and sword timing optimizes survival
Painkiller (2004)
Tarot card selection and level routing provide a thin solvable layer
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.