head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Pure Mechanics
A twin-stick arcade shooter testing aim and web defense reflexes.

Execution · Pure Mechanics
A frantic vertical roguelite about falling fast and shooting your boots.
Black Widow leans Execution (Pure Mechanics); Downwell leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Black Widow
Twin-stick aiming and movement on the web is the core test
Downwell
Gunboot timing and split-second landings decide runs
Black Widow leans a little harder on reads, though the gap is small.
Black Widow
Bugs follow scripted spawn patterns, not adapting
Downwell
Enemies never adapt
Downwell leans a little harder on variance, though the gap is small.
Black Widow
Bug entry points add mild unpredictability
Downwell
Procedural wells and shop offers vary runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Black Widow
Prioritizing targets and bonus timing raises scores
Downwell
Combo lines and upgrade picks reward study
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.