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

Execution · Competitive PvP
Weapon-spacing execution and live conditioning battles against human opponents.

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 V leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
SoulCalibur V
Spacing, step timing and just-frame inputs reward trained hands
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans clearly harder on reads.
SoulCalibur V
Versus humans, conditioning and throw-versus-mid guessing decides rounds
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 V
Nothing hidden beyond the opponent's intent
Super Smash Bros. Melee
Stage hazard RNG and spawn positions add marginal chaos
Super Smash Bros. Melee leans a little harder on optimization, though the gap is small.
SoulCalibur V
Frame data, matchup study and ring positioning are deep homework
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.