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 · Competitive PvP
Sony's mascot brawler where only Super attacks score kills, making meter management the whole game.

Execution · Competitive PvP
An arcade wrestling fighter about throw timing and outguessing opponents in grapples.
PlayStation All-Stars Battle Royale leans Execution (Competitive PvP); Saturday Night Slam Masters leans Execution (Competitive PvP).
Saturday Night Slam Masters leans a little harder on execution, though the gap is small.
PlayStation All-Stars Battle Royale
Combo routes into Super meter need decent but modest hands.
Saturday Night Slam Masters
Grab, throw and special-move timing decide bouts
PlayStation All-Stars Battle Royale leans a little harder on reads, though the gap is small.
PlayStation All-Stars Battle Royale
Super-only kills make baiting human opponents the core decision.
Saturday Night Slam Masters
Human opponents adapt; grappling is a prediction battle
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
PlayStation All-Stars Battle Royale
Items and four-player chaos add mild randomness.
Saturday Night Slam Masters
Little randomness once moves are learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
PlayStation All-Stars Battle Royale
Meter-build efficiency per character is the solvable layer.
Saturday Night Slam Masters
Move spacing and ring positioning 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.