head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Competitive PvP
Arc System Works' Dungeon Fighter spinoff where an MP meter turns specials into a resource economy.

Execution · Competitive PvP
The N64 original that turned Nintendo mascots into a percent-and-knockback platform fighter.
DNF Duel leans Execution (Competitive PvP); Super Smash Bros. leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
DNF Duel
MP skill combos are lenient but conversions still need hands.
Super Smash Bros.
Z-cancels and DI demand fast precise inputs despite simple controls.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DNF Duel
White-damage pressure and Awakening baits drive human yomi.
Super Smash Bros.
Edgeguard and tech-chase guessing against adapting humans decides stocks.
Super Smash Bros. leans a little harder on variance, though the gap is small.
DNF Duel
Deterministic systems throughout.
Super Smash Bros.
Item spawns add randomness; tournament rules strip most of it.
DNF Duel leans a little harder on optimization, though the gap is small.
DNF Duel
MP economy management is the distinctive solvable layer.
Super Smash Bros.
Stage positioning and percent-based kill setups are learnable.
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.