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

Execution · Pure Mechanics
A first-person endless runner testing reflexes on a doomed spaceship.

Execution · Pure Mechanics
A radio-controlled car racer through houses and supermarkets with weapon pickups and hidden shortcuts.
Infinity Runner leans Execution (Pure Mechanics); Re-Volt 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.
Infinity Runner
Fast reflexes for dodging and QTEs define play
Re-Volt
Twitchy RC car handling punishes sloppy steering
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Infinity Runner
Scripted obstacles, no adaptive opponent
Re-Volt
Multiplayer item duels add a thin mind-game layer
Re-Volt leans a little harder on variance, though the gap is small.
Infinity Runner
Some procedural obstacle variation
Re-Volt
Random pickups swing race outcomes
Re-Volt leans a little harder on optimization, though the gap is small.
Infinity Runner
Little to solve beyond reaction memorization
Re-Volt
Shortcuts and car-class knowledge 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.