head to head
Mario Kart 8 Deluxe asks more than The Binding of Isaac: Afterbirth+, and the gap is reads.

Execution · Twitch Chaos
A kart racer where item luck collides with optimized lines and builds.

Execution · Twitch Chaos
Dodging under fire while leveraging deep item knowledge against run RNG.
Mario Kart 8 Deluxe leans Execution (Twitch Chaos); The Binding of Isaac: Afterbirth+ 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.
Mario Kart 8 Deluxe
Drift boosts, snaking, and item timing demand precision.
The Binding of Isaac: Afterbirth+
Dodging bullet patterns while aiming tears is constant
Mario Kart 8 Deluxe leans clearly harder on reads.
Mario Kart 8 Deluxe
Human racers bait and block items but mostly reactive.
The Binding of Isaac: Afterbirth+
Enemies are random or scripted, never adaptive
The Binding of Isaac: Afterbirth+ leans a little harder on variance, though the gap is small.
Mario Kart 8 Deluxe
Item distribution heavily randomized by position.
The Binding of Isaac: Afterbirth+
Item pools, room layouts and pickups define each run
The Binding of Isaac: Afterbirth+ leans a little harder on optimization, though the gap is small.
Mario Kart 8 Deluxe
Kart build, line, and shortcut knowledge define top times.
The Binding of Isaac: Afterbirth+
Encyclopedic item synergy knowledge converts variance into wins
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.