head to head
Neither is simply harder - they are hard in different places. Knightfall: A Daring Journey demands more variance; Super Smash Bros. Melee demands more execution.

Execution · Competitive PvP
A chaotic multiplayer horse-racing game testing control and prediction against human riders.

Execution · Competitive PvP
A platform fighter with one of the highest execution ceilings in any competitive game, layered on top of deep human reads.
Knightfall: A Daring Journey leans Execution (Competitive PvP); Super Smash Bros. Melee leans Execution (Competitive PvP).
Super Smash Bros. Melee leans clearly harder on execution.
Knightfall: A Daring Journey
Horse drifting and gun control demand precise input
Super Smash Bros. Melee
Wavedashing, L-cancels, and tech-chasing set an extreme physical ceiling
Super Smash Bros. Melee leans clearly harder on reads.
Knightfall: A Daring Journey
Racing against human opponents rewards prediction
Super Smash Bros. Melee
Reading DI choices and opponent adaptive habits is constant and non-convergent
Knightfall: A Daring Journey leans clearly harder on variance.
Knightfall: A Daring Journey
Physics chaos adds unpredictable outcomes
Super Smash Bros. Melee
Stage hazard RNG and spawn positions add marginal chaos
Super Smash Bros. Melee leans clearly harder on optimization.
Knightfall: A Daring Journey
Route and shortcut knowledge help marginally
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.