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

Reads · Competitive PvP
A platform fighter where edgeguards turn on reading the opponent.

Execution · Competitive PvP
The 3D fighting series opener where execution and human mind-games decide every round.
Super Smash Bros. Ultimate leans Reads (Competitive PvP); Tekken 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.
Super Smash Bros. Ultimate
Tech skill, edgeguards, and DI are mechanically heavy.
Tekken
Frame-tight inputs, juggle combos, movement demand trained hands
Super Smash Bros. Ultimate leans a little harder on reads, though the gap is small.
Super Smash Bros. Ultimate
Adaptive opponents drive ledge and platform mind games.
Tekken
Human opponent adapts; throws, lows, sidesteps form mixup mind-games
Super Smash Bros. Ultimate leans a little harder on variance, though the gap is small.
Super Smash Bros. Ultimate
Stage hazards and items if enabled.
Tekken
No hidden info; only matchup unfamiliarity early on
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Smash Bros. Ultimate
Matchup knowledge and kill confirms are learnable.
Tekken
Frame data, punishes, and combo routing are studyable systems
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.