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 · Twitch Chaos
Kart racing where drift skill fights against item-roll chaos on themed tracks.

Execution · Pure Mechanics
Demolition derby racer with destructible PvP chaos.
Pac-Man World Rally leans Execution (Twitch Chaos); Wreckfest leans Execution (Pure Mechanics).
Wreckfest leans a little harder on execution, though the gap is small.
Pac-Man World Rally
Drift timing and shortcut jumps decide clean laps
Wreckfest
Demolition driving, ramming angles
Wreckfest leans a little harder on reads, though the gap is small.
Pac-Man World Rally
Human races add light item-timing prediction
Wreckfest
Online derby PvP rewards ramming reads
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pac-Man World Rally
Item rolls scramble positions every race
Wreckfest
Crash physics chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Pac-Man World Rally
Track shortcuts and kart picks are learnable edges
Wreckfest
Car upgrades and durability tuning
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.