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

Execution · Competitive PvP
Frantic small-arena duels testing reflexes and prediction of human opponents.

Execution · Competitive PvP
Competitive football testing touch execution and out-reading a human opponent's patterns.
Superfighters Deluxe leans Execution (Competitive PvP); UFL leans Execution (Competitive PvP).
Superfighters Deluxe leans a little harder on execution, though the gap is small.
Superfighters Deluxe
Aim, blocks, throws and movement decide frantic small-arena fights
UFL
First touches, shot timing and dribbling decide chances
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Superfighters Deluxe
Human opponents constantly adapt positioning and weapon timing
UFL
Human opponents adjust pressing and passing patterns constantly
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Superfighters Deluxe
Random weapon spawns and destructible chaos shuffle fights
UFL
Deflections and finishing rolls add match noise
UFL leans a little harder on optimization, though the gap is small.
Superfighters Deluxe
Map knowledge and weapon priorities are a thin layer
UFL
Squad building and tactical setups sit underneath
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.