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 loud, high-endurance test of accurate crowd control against relentless scripted enemy swarms in open arenas.

Execution · Pure Mechanics
A tilt-control balance game about rolling precisely through floating mazes.
Serious Sam: The First Encounter leans Execution (Pure Mechanics); Super Monkey Ball 3D leans Execution (Pure Mechanics).
Super Monkey Ball 3D leans a little harder on execution, though the gap is small.
Serious Sam: The First Encounter
Sustained accurate fire against enormous enemy hordes demands constant aim
Super Monkey Ball 3D
Precise tilt control under gravity is the entire test
Super Monkey Ball 3D leans a little harder on reads, though the gap is small.
Serious Sam: The First Encounter
All enemies are scripted and follow fixed rush patterns
Super Monkey Ball 3D
Solo stages, no opponent to predict
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Serious Sam: The First Encounter
Enemy placement is consistent across runs; no hidden information
Super Monkey Ball 3D
Levels are fixed with little randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Serious Sam: The First Encounter
Enemy priority and positioning strategy are learnable but shallow
Super Monkey Ball 3D
Optimal lines through mazes reward route learning
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.