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 · Grand Arena
A variation-based fighter where character specialisation choices and read-and-punish execution drive competitive outcomes.

Execution · Grand Arena
A 2D fighting game where execution meets relentless yomi at neutral.
Mortal Kombat X leans Execution (Grand Arena); Street Fighter 6 leans Execution (Grand Arena).
Street Fighter 6 leans a little harder on execution, though the gap is small.
Mortal Kombat X
Variation-specific combo routes demand precise practice
Street Fighter 6
Frame-perfect inputs and combos are mandatory.
Street Fighter 6 leans a little harder on reads, though the gap is small.
Mortal Kombat X
Reading opponent's variation choice and tendency shifts the matchup
Street Fighter 6
Adaptive opponent baits Drive Impacts and throws.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat X
No RNG; transparent match flow
Street Fighter 6
Essentially no randomness in match outcomes.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat X
Variation selection and optimal punish routes require systematic study
Street Fighter 6
Matchup charts, frame data, and combo routes.
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.