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

Execution · Competitive PvP
Input execution and human opponent prediction across a two-plane fighting system.

Execution · Competitive PvP
Weapon-based dueling testing spacing execution and mixup prediction against humans.
Fatal Fury 3: Road to the Final Victory leans Execution (Competitive PvP); SoulCalibur III leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Fatal Fury 3: Road to the Final Victory
Special-move inputs and lane-shift timing demand practiced hands
SoulCalibur III
Spacing, movement and just-frame timing demand real hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fatal Fury 3: Road to the Final Victory
Versus play is constant prediction of a human's habits
SoulCalibur III
Versus humans, conditioning and throw-mixup guessing decides rounds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fatal Fury 3: Road to the Final Victory
Nothing random once matchups are known
SoulCalibur III
Deterministic combat with nothing hidden
SoulCalibur III leans a little harder on optimization, though the gap is small.
Fatal Fury 3: Road to the Final Victory
Learning frame data and lane mechanics underpins competence
SoulCalibur III
Frame data, matchup study and stage 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.