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
Timing-based rallies and human shot-prediction wrapped in party-court chaos.

Execution · Competitive PvP
Frantic small-arena duels testing reflexes and prediction of human opponents.
Mario Power Tennis leans Execution (Competitive PvP); Superfighters Deluxe leans Execution (Competitive PvP).
Superfighters Deluxe leans a little harder on execution, though the gap is small.
Mario Power Tennis
Shot timing and court positioning decide rallies
Superfighters Deluxe
Aim, blocks, throws and movement decide frantic small-arena fights
Superfighters Deluxe leans a little harder on reads, though the gap is small.
Mario Power Tennis
Versus humans, baiting and outguessing shot placement matters
Superfighters Deluxe
Human opponents constantly adapt positioning and weapon timing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Power Tennis
Gimmick courts and items inject chaos into points
Superfighters Deluxe
Random weapon spawns and destructible chaos shuffle fights
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Power Tennis
Character matchups and shot selection reward modest study
Superfighters Deluxe
Map knowledge and weapon priorities are a thin layer
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.