head to head
WWE Legends of WrestleMania asks more than Mortal Kombat: Shaolin Monks, and the gap is reads.

Execution · Practiced Mastery
Combo execution through scripted Outworld brawls, alone or in co-op.

Execution · Competitive PvP
Reversal-timing wrestling exchanges with a thin layer of versus-human guessing.
Mortal Kombat: Shaolin Monks leans Execution (Practiced Mastery); WWE Legends of WrestleMania 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.
Mortal Kombat: Shaolin Monks
Combo juggling and launcher timing carry combat
WWE Legends of WrestleMania
Grapple chains and reversal timing windows decide exchanges
WWE Legends of WrestleMania leans clearly harder on reads.
Mortal Kombat: Shaolin Monks
Bosses telegraph fixed Outworld patterns
WWE Legends of WrestleMania
Versus humans, guessing reversal attempts adds a thin mind game
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat: Shaolin Monks
Encounters repeat identically once learned
WWE Legends of WrestleMania
Outcomes follow inputs with little randomness
Mortal Kombat: Shaolin Monks leans a little harder on optimization, though the gap is small.
Mortal Kombat: Shaolin Monks
Move unlocks, co-op synergies and boss patterns reward study
WWE Legends of WrestleMania
Move chains and match-type knowledge are shallow but present
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.