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.

Optimization · Pure Optimization
A classic arcade game about computing the trajectory to land in a bucket.

Optimization · Pure Optimization
Procedural space exploration sandbox with crafting depth.
Human Cannonball leans Optimization (Pure Optimization); No Man's Sky leans Optimization (Pure Optimization).
Human Cannonball leans a little harder on execution, though the gap is small.
Human Cannonball
Firing requires no real motor precision
No Man's Sky
Light shooter and flight inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Human Cannonball
No opponent to model in this arcade game
No Man's Sky
Mostly solo, sparse PvP
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Human Cannonball
Some variations randomize the target distance
No Man's Sky
Procedural planets and loot
No Man's Sky leans a little harder on optimization, though the gap is small.
Human Cannonball
Calculating angle, speed and position is the whole puzzle
No Man's Sky
Base, freighter, expedition progression
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.