head to head
Super Smash Bros. Melee asks more than NBA 2K13, and the gap is execution.

Execution · Competitive PvP
Basketball shot-timing and scheme-reading against human or scripted defenses.

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 2K13 leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
NBA 2K13
Stick handles and shot release timing decide possessions
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 2K13
Online play is constant scheme and tendency reading
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
NBA 2K13 leans a little harder on variance, though the gap is small.
NBA 2K13
Shot RNG and loose-ball physics add 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 2K13
Playcalling, rosters and matchup exploits 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.