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
Retro international football sim with team management basics.

Reads · Competitive PvP
Anime arena fighter where managing the substitution gauge is the real duel.
Football International leans Execution (Competitive PvP); Naruto Shippuden: Ultimate Ninja Storm 4 leans Reads (Competitive PvP).
Football International leans a little harder on execution, though the gap is small.
Football International
passing and shooting input precision
Naruto Shippuden: Ultimate Ninja Storm 4
Simple inputs; movement and substitution timing matter
Naruto Shippuden: Ultimate Ninja Storm 4 leans a little harder on reads, though the gap is small.
Football International
reading human opponent's attacking patterns
Naruto Shippuden: Ultimate Ninja Storm 4
Versus humans, baiting substitutions is the core game
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Football International
minor bounce and ref randomness
Naruto Shippuden: Ultimate Ninja Storm 4
Minor support-assist chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Football International
formation and substitution strategy
Naruto Shippuden: Ultimate Ninja Storm 4
Team composition and matchup knowledge
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.