head to head
Neither is simply harder - they are hard in different places. Naruto Shippuden: Ultimate Ninja Storm 4 demands more execution; The Ship: Remasted demands more reads.

Reads · Competitive PvP
Anime arena fighter where managing the substitution gauge is the real duel.

Reads · Pure Mind Games
A social-stealth murder game about predicting and evading human hunters who hunt you.
Naruto Shippuden: Ultimate Ninja Storm 4 leans Reads (Competitive PvP); The Ship: Remasted leans Reads (Pure Mind Games).
Naruto Shippuden: Ultimate Ninja Storm 4 leans clearly harder on execution.
Naruto Shippuden: Ultimate Ninja Storm 4
Simple inputs; movement and substitution timing matter
The Ship: Remasted
Attacks land easily; no aim-heavy ceiling
The Ship: Remasted leans clearly harder on reads.
Naruto Shippuden: Ultimate Ninja Storm 4
Versus humans, baiting substitutions is the core game
The Ship: Remasted
Stalking and evading a human hunter who models you is everything
The Ship: Remasted leans clearly harder on variance.
Naruto Shippuden: Ultimate Ninja Storm 4
Minor support-assist chaos
The Ship: Remasted
Hidden quarry identity adds investigative uncertainty
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Naruto Shippuden: Ultimate Ninja Storm 4
Team composition and matchup knowledge
The Ship: Remasted
Needs management and weapon access reward planning
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.