head to head
Street Fighter III: 3rd Strike asks more than Mortal Kombat X, and the gap is reads.

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

Reads · Competitive PvP
A parry system that elevates reads to the central skill axis, with execution demands that remain punishing decades later.
Mortal Kombat X leans Execution (Grand Arena); Street Fighter III: 3rd Strike leans Reads (Competitive PvP).
Street Fighter III: 3rd Strike leans a little harder on execution, though the gap is small.
Mortal Kombat X
Variation-specific combo routes demand precise practice
Street Fighter III: 3rd Strike
SA combo links and precise parry timing set an extreme execution ceiling
Street Fighter III: 3rd Strike leans clearly harder on reads.
Mortal Kombat X
Reading opponent's variation choice and tendency shifts the matchup
Street Fighter III: 3rd Strike
Parry is a pure real-time read against an adapting human - the defining mechanic
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 III: 3rd Strike
No RNG; all information is transparent
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 III: 3rd Strike
Super Art selection and character punish routing are well-studied
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.