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 frantic vertical roguelite about falling fast and shooting your boots.

Execution · Pure Mechanics
A top-down maze shooter about surviving robots while grabbing a randomly-placed gun.
Downwell leans Execution (Pure Mechanics); Night Stalker leans Execution (Pure Mechanics).
Downwell leans a little harder on execution, though the gap is small.
Downwell
Gunboot timing and split-second landings decide runs
Night Stalker
Shooting and dodging robots in the maze is the lead demand
Night Stalker leans a little harder on reads, though the gap is small.
Downwell
Enemies never adapt
Night Stalker
Enemies are scripted, not adaptive minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Downwell
Procedural wells and shop offers vary runs
Night Stalker
Random gun placement and enemy movement add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Downwell
Combo lines and upgrade picks reward study
Night Stalker
Learning maze flow and gun-grab timing rewards play
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.