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
Floaty one-button momentum control in arcade altitude duels.

Execution · Pure Mechanics
Drift execution and learned racing lines through destructible city tracks.
Balloon Fight leans Execution (Pure Mechanics); Ridge Racer Unbounded 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.
Balloon Fight
Flap-physics altitude duels demand precise momentum control
Ridge Racer Unbounded
Drift control and boost timing decide every race
Ridge Racer Unbounded leans a little harder on reads, though the gap is small.
Balloon Fight
A couch rival adds light prediction; birds don't adapt
Ridge Racer Unbounded
Online rivals allow mild positional prediction
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
Ridge Racer Unbounded
Destruction chaos adds modest track noise
Ridge Racer Unbounded leans a little harder on optimization, though the gap is small.
Balloon Fight
Spawn patterns and safe positions are quickly mapped
Ridge Racer Unbounded
Learning racing lines and shortcut routes rewards 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.