head to head
Ultimate Marvel vs. Capcom 3 asks more than Mortal Kombat 11, and the gap is execution.

Reads · Grand Arena
A controlled-pace fighter where resource management and opponent modelling outweigh raw execution pressure.

Execution · Grand Arena
A hyper-fast tag fighting game defined by three-character teams and touch-of-death combos.
Mortal Kombat 11 leans Reads (Grand Arena); Ultimate Marvel vs. Capcom 3 leans Execution (Grand Arena).
Ultimate Marvel vs. Capcom 3 leans clearly harder on execution.
Mortal Kombat 11
Kustom variation execution is demanding but more accessible than MKX
Ultimate Marvel vs. Capcom 3
Long touch-of-death combos demand elite hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 11
Fatal Blow timing reads and opponent tendency tracking are constant
Ultimate Marvel vs. Capcom 3
Mixups and assist baits versus adapting humans
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 11
No RNG; all mechanics are visible
Ultimate Marvel vs. Capcom 3
Almost fully deterministic
Mortal Kombat 11 leans a little harder on optimization, though the gap is small.
Mortal Kombat 11
Fatal Blow baiting, Kustom build selection, and frame data extensively studied
Ultimate Marvel vs. Capcom 3
Team composition and matchup knowledge run deep
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.