head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
Arcade car control across loose surfaces, weather and door-to-door packs.

Execution · Pure Mechanics
An open-world winter sports game testing trick execution and downhill control.
Dirt 5 leans Execution (Pure Mechanics); Snow 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.
Dirt 5
Sliding off-road cars on mixed surfaces is the whole test
Snow
Controlling tricks, balance and landings is the lead skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt 5
Pack racing adds light wheel-to-wheel jockeying
Snow
Open-world solo play with no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt 5
Dynamic weather shifts grip unpredictably
Snow
Terrain is fixed; minor randomness in events
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt 5
Car class knowledge and line choice reward study
Snow
Line choice and gear tuning reward planning for events
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.