head to head
Micro Machines 2: Turbo Tournament asks more than Dirt 5, and the gap is reads.

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

Execution · Pure Mechanics
Twitchy miniature racing where screen-edge duels punish imprecise hands.
Dirt 5 leans Execution (Pure Mechanics); Micro Machines 2: Turbo Tournament 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
Micro Machines 2: Turbo Tournament
Twitchy top-down handling on tabletop tracks is the core test
Micro Machines 2: Turbo Tournament leans clearly harder on reads.
Dirt 5
Pack racing adds light wheel-to-wheel jockeying
Micro Machines 2: Turbo Tournament
Screen-edge duels reward predicting human rivals' lines
Dirt 5 leans a little harder on variance, though the gap is small.
Dirt 5
Dynamic weather shifts grip unpredictably
Micro Machines 2: Turbo Tournament
Tracks fixed, almost nothing random
Dirt 5 leans a little harder on optimization, though the gap is small.
Dirt 5
Car class knowledge and line choice reward study
Micro Machines 2: Turbo Tournament
Memorising shortcuts and racing lines per track
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.