head to head
Super Smash Bros. Melee asks more than FIFA Soccer 10, and the gap is reads.

Execution · Competitive PvP
Football execution with finer dribble control, human prediction, and bounce luck.

Execution · Competitive PvP
A platform fighter with one of the highest execution ceilings in any competitive game, layered on top of deep human reads.
FIFA Soccer 10 leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
FIFA Soccer 10
360-degree dribbling raised the stick-skill ceiling
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans clearly harder on reads.
FIFA Soccer 10
Outguessing a human defender's tackle timing is constant
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
FIFA Soccer 10 leans a little harder on variance, though the gap is small.
FIFA Soccer 10
Deflections and keeper randomness swing tight matches
Super Smash Bros. Melee
Stage hazard RNG and spawn positions add marginal chaos
Super Smash Bros. Melee leans clearly harder on optimization.
FIFA Soccer 10
Formations, tactics and manager mode 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.