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 · Practiced Mastery
A rail shooter testing reflex execution against fully memorisable enemy waves.

Execution · Pure Mechanics
A vertical scroller testing bullet-dodging execution over memorised enemy wave patterns.
Star Fox leans Execution (Practiced Mastery); SWIV leans Execution (Pure Mechanics).
SWIV leans a little harder on execution, though the gap is small.
Star Fox
Dodging, shooting and barrel rolls on rails demand reflexes
SWIV
Weaving through dense bullet patterns is the whole vertical-shooter test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Star Fox
Every enemy wave is a fixed scripted pattern
SWIV
Enemy waves are scripted spawns, never adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Star Fox
Routes and spawns are deterministic per path
SWIV
Almost fully deterministic once patterns are memorised
Star Fox leans a little harder on optimization, though the gap is small.
Star Fox
Memorising wave patterns and route choices for score
SWIV
Learning spawn layouts and power-up routes raises the ceiling
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.