head to head
Super Smash Bros. Melee asks more than SoulCalibur VI, and the gap is execution.

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

Execution · Competitive PvP
A platform fighter with one of the highest execution ceilings in any competitive game, layered on top of deep human reads.
SoulCalibur VI leans Execution (Grand Arena); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
SoulCalibur VI
Reversal Edge timing and long lethal hit strings require tight execution
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans a little harder on reads, though the gap is small.
SoulCalibur VI
Reversal Edge is a pure read-off mechanic against human opponents
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
Super Smash Bros. Melee leans a little harder on variance, though the gap is small.
SoulCalibur VI
No RNG; ring position is full information
Super Smash Bros. Melee
Stage hazard RNG and spawn positions add marginal chaos
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
Super Smash Bros. Melee
Character matchup tiers and optimal movement routing are deeply 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.