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 relentless wave-clearing shooter that tests sustained aim and movement against massive scripted enemy crowds.

Execution · Pure Mechanics
A twin-stick arcade shooter framed as a lethal game show of swarming arenas and prizes.
Painkiller (2004) leans Execution (Pure Mechanics); Smash TV leans Execution (Pure Mechanics).
Smash TV leans a little harder on execution, though the gap is small.
Painkiller (2004)
Constant crowd-control movement against overwhelming enemy counts demands fast aim
Smash TV
Twin-stick aim and dodging through swarming arenas is everything.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Painkiller (2004)
All enemies are scripted waves with fixed attack patterns
Smash TV
Mobs rush mindlessly on scripts.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Painkiller (2004)
Enemy counts and placements are fixed with minimal unknown elements
Smash TV
Spawn timing and pickups vary modestly.
Painkiller (2004) leans a little harder on optimization, though the gap is small.
Painkiller (2004)
Tarot card selection and level routing provide a thin solvable layer
Smash TV
Room order, powerup priorities, and boss patterns are learnable.
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.