head to head
Super Smash Bros. Melee asks more than NBA 2K10, and the gap is reads.

Execution · Competitive PvP
Stick-skill basketball execution layered with predicting a human opponent's play-calling.

Execution · Competitive PvP
A platform fighter with one of the highest execution ceilings in any competitive game, layered on top of deep human reads.
NBA 2K10 leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
NBA 2K10
Shot timing, dribble moves and defense need real stick skill
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans clearly harder on reads.
NBA 2K10
Human opponents' play-calling and tendencies must be predicted
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K10
Shot RNG and bounces add modest game-to-game noise
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.
NBA 2K10
Roster knowledge, play-calling and matchup exploitation 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.