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 · Competitive PvP
Anime fighter debuting the Drive system and famously execution-heavy cast.

Execution · Grand Arena
A weapons-based 3D fighter where Reversal Edge decisions and ring positioning create constant human reads.
BlazBlue: Calamity Trigger leans Execution (Competitive PvP); SoulCalibur VI leans Execution (Grand Arena).
BlazBlue: Calamity Trigger leans a little harder on execution, though the gap is small.
BlazBlue: Calamity Trigger
Long anime combos and tight defensive inputs
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.
BlazBlue: Calamity Trigger
Human opponents demand constant conditioning and adaptation
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.
BlazBlue: Calamity Trigger
Negligible randomness in matches
SoulCalibur VI
No RNG; ring position is full information
SoulCalibur VI leans a little harder on optimization, though the gap is small.
BlazBlue: Calamity Trigger
Frame data, drive mechanics, and matchup study
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.