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
Arcade car control across loose surfaces, weather and door-to-door packs.

Execution · Pure Mechanics
A multi-sport execution game testing trick timing and line selection across open mountain terrain.
Dirt 5 leans Execution (Pure Mechanics); Riders Republic leans Execution (Pure Mechanics).
Riders Republic leans a little harder on execution, though the gap is small.
Dirt 5
Sliding off-road cars on mixed surfaces is the whole test
Riders Republic
Trick execution and landing timing across multiple sports disciplines
Riders Republic leans a little harder on reads, though the gap is small.
Dirt 5
Pack racing adds light wheel-to-wheel jockeying
Riders Republic
Mass-start races add limited human prediction layer
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
Riders Republic
Terrain variation and collision chaos in crowd 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
Riders Republic
Route selection and equipment progression have learnable optimal paths
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.