head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
A kart racer demanding precise boost-chain execution and route optimisation over item luck.

Execution · Pure Mechanics
A rally sim whose procedural stages keep variance alive while rewarding clean car control.
Crash Team Racing Nitro-Fueled leans Execution (Practiced Mastery); DiRT 4 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.
Crash Team Racing Nitro-Fueled
Boost-chain execution and power-slide timing are the lead skill
DiRT 4
Procedural stages still demand consistent throttle and apex discipline
Crash Team Racing Nitro-Fueled leans a little harder on reads, though the gap is small.
Crash Team Racing Nitro-Fueled
Human multiplayer has light item-use anticipation
DiRT 4
Time-attack structure has no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Team Racing Nitro-Fueled
Item boxes and battle pickups introduce real outcome randomness
DiRT 4
Procedurally generated stages prevent full route memorisation
Crash Team Racing Nitro-Fueled leans a little harder on optimization, though the gap is small.
Crash Team Racing Nitro-Fueled
Track-specific boost chains and shortcut routes are fully memorisable
DiRT 4
Car choice, setup and rally team progression are solvable systems
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.