head to head
Super Smash Bros. Melee asks more than Rugby World Cup 2015, and the gap is execution.

Execution · Competitive PvP
A rugby simulation testing input timing and tactical play against 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.
Rugby World Cup 2015 leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
Rugby World Cup 2015
Timing passes, tackles, and kicks needs consistent inputs
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans clearly harder on reads.
Rugby World Cup 2015
Human opponents can be read in multiplayer matches
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
Rugby World Cup 2015 leans a little harder on variance, though the gap is small.
Rugby World Cup 2015
Ball bounces and AI add some unpredictability
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.
Rugby World Cup 2015
Set plays, team selection, and tactics form a systems layer
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.