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
Floaty one-button momentum control in arcade altitude duels.

Execution · Pure Mechanics
An on-rails comedic shooter testing precise aim against scripted waves.
Balloon Fight leans Execution (Pure Mechanics); Gal*Gun 2 leans Execution (Pure Mechanics).
Balloon Fight leans a little harder on execution, though the gap is small.
Balloon Fight
Flap-physics altitude duels demand precise momentum control
Gal*Gun 2
on-rails aiming and timing precision
Balloon Fight leans a little harder on reads, though the gap is small.
Balloon Fight
A couch rival adds light prediction; birds don't adapt
Gal*Gun 2
scripted enemy waves, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Balloon Fight
Enemy drift and lightning add arcade randomness
Gal*Gun 2
minor randomness in encounters
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Balloon Fight
Spawn patterns and safe positions are quickly mapped
Gal*Gun 2
weapon/route choice
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.