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 · Competitive PvP
An online martial-arts brawler where you build a custom move deck and duel other players.

Execution · Competitive PvP
The toned-down crossover fighter matching Mortal Kombat's roster against DC superheroes.
Absolver leans Execution (Competitive PvP); Mortal Kombat vs. DC Universe leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Absolver
Precise timing, dodges, and combo strings
Mortal Kombat vs. DC Universe
Juggle combos and klose kombat timing
Absolver leans a little harder on reads, though the gap is small.
Absolver
Human duels reward predicting stance switches
Mortal Kombat vs. DC Universe
Human mixups, though a simpler toolset than peers
Absolver leans a little harder on variance, though the gap is small.
Absolver
Little hidden info beyond unfamiliar decks
Mortal Kombat vs. DC Universe
Deterministic crossover combat
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Absolver
Combat-deck construction is a solvable layer
Mortal Kombat vs. DC Universe
Mapping juggle routes and matchup tools rewards practice
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.