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
A time-trial racer where flawless inputs over fixed tracks are everything.

Execution · Pure Mechanics
A time-trial racer testing millisecond steering precision along studied ideal lines.
Trackmania leans Execution (Pure Mechanics); TrackMania United leans Execution (Pure Mechanics).
Trackmania leans a little harder on execution, though the gap is small.
Trackmania
Pure input precision over deterministic tracks defines everything.
TrackMania United
Hundredth-second steering precision over stunts decides every leaderboard
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Trackmania
No opponent; ghost runs only.
TrackMania United
Ghost-style multiplayer never interacts with your car
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Trackmania
Tracks are deterministic with zero randomness.
TrackMania United
Tracks are perfectly deterministic
Trackmania leans a little harder on optimization, though the gap is small.
Trackmania
Line optimization and shortcut discovery matter heavily.
TrackMania United
Finding the ideal line is a study discipline of its own
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.