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 · Practiced Mastery
Kart racer whose boost-chaining drift system gives it a real execution ceiling.

Execution · Practiced Mastery
A kart racer testing driving precision and item management on user-created tracks.
Crash Team Racing leans Execution (Practiced Mastery); ModNation Racers: Road Trip leans Execution (Practiced Mastery).
Crash Team Racing leans a little harder on execution, though the gap is small.
Crash Team Racing
Boost-chaining and drift timing separate skill tiers
ModNation Racers: Road Trip
Drifting and boosting at speed demands driving precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Team Racing
Human races involve item baiting and blocking
ModNation Racers: Road Trip
Versus humans, anticipating weapon use matters somewhat
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Team Racing
Item box rolls swing positions
ModNation Racers: Road Trip
Item pickups and weapon spread add kart-racer chaos
Crash Team Racing leans a little harder on optimization, though the gap is small.
Crash Team Racing
Shortcut routes and reserve-boost technique
ModNation Racers: Road Trip
Track lines, boost management and shortcuts reward planning
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.