head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Grand Arena
A weapons-based 3D fighter where Reversal Edge decisions and ring positioning create constant human reads.

Execution · Grand Arena
A tag-team crossover fighter pitting Street Fighter's cast against Tekken's under Capcom rules.
SoulCalibur VI leans Execution (Grand Arena); Street Fighter X Tekken 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.
SoulCalibur VI
Reversal Edge timing and long lethal hit strings require tight execution
Street Fighter X Tekken
Tag combos and juggle timing demand practiced hands
SoulCalibur VI leans a little harder on reads, though the gap is small.
SoulCalibur VI
Reversal Edge is a pure read-off mechanic against human opponents
Street Fighter X Tekken
Human mixups and tag baits require adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
SoulCalibur VI
No RNG; ring position is full information
Street Fighter X Tekken
Deterministic aside from negligible elements
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
SoulCalibur VI
Soul Charge routes and matchup character knowledge reward study
Street Fighter X Tekken
Gem loadouts and team synergy add a builder layer
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.