head to head
Dirt 5 asks more than Sports Champions 2, and the gap is optimization.

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

Execution · Pure Mechanics
Testing how precisely you can swing a Move controller across six sports.
Dirt 5 leans Execution (Pure Mechanics); Sports Champions 2 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
Sports Champions 2
Motion-controlled swings and punches reward physical precision
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
Sports Champions 2
Local rivals can be baited in boxing or tennis, lightly
Dirt 5 leans a little harder on variance, though the gap is small.
Dirt 5
Dynamic weather shifts grip unpredictably
Sports Champions 2
Events are deterministic given your motion
Dirt 5 leans clearly harder on optimization.
Dirt 5
Car class knowledge and line choice reward study
Sports Champions 2
Technique tips exist but systems stay shallow
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.