head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Grand Arena
A tag-assisted fighter blending execution with read-based mixups.

Execution · Grand Arena
A weapons-based 3D fighter where Reversal Edge decisions and ring positioning create constant human reads.
Mortal Kombat 1 leans Execution (Grand Arena); SoulCalibur VI leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 1
Kameo timing and combo execution gate damage.
SoulCalibur VI
Reversal Edge timing and long lethal hit strings require tight execution
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 1
Adaptive opponents bait pokes and wakeups.
SoulCalibur VI
Reversal Edge is a pure read-off mechanic against human opponents
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 1
Effectively no randomness in matches.
SoulCalibur VI
No RNG; ring position is full information
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 1
Kameo synergy, frame data, and punish theory.
SoulCalibur VI
Soul Charge routes and matchup character knowledge reward study
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.