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 top-down co-op shooter testing aim and survival against alien swarms.

Execution · Twitch Chaos
Kart racing execution moderated by item randomness and learnable track routes.
Bunch of Heroes leans Execution (Practiced Mastery); Sonic & All-Stars Racing Transformed leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Bunch of Heroes
Twin-stick aiming and dodging swarms is the core
Sonic & All-Stars Racing Transformed
Drift timing and transforming vehicle control reward practice
Sonic & All-Stars Racing Transformed leans a little harder on reads, though the gap is small.
Bunch of Heroes
Enemies swarm on scripted AI, no adaptation
Sonic & All-Stars Racing Transformed
Human racers add light positional mind games
Sonic & All-Stars Racing Transformed leans a little harder on variance, though the gap is small.
Bunch of Heroes
Enemy spawns and waves add some randomness
Sonic & All-Stars Racing Transformed
Item rolls regularly upend race positions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bunch of Heroes
Upgrade and co-op positioning choices matter lightly
Sonic & All-Stars Racing Transformed
Track shortcuts and drift-boost routes are learnable
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.