head to head
Neither is simply harder - they are hard in different places. Hide and Shriek demands more variance; Naruto Shippuden: Ultimate Ninja Storm 4 demands more execution.

Reads · Pure Mind Games
A one-versus-one hide-and-scare game about outpredicting an invisible human opponent.

Reads · Competitive PvP
Anime arena fighter where managing the substitution gauge is the real duel.
Hide and Shriek leans Reads (Pure Mind Games); Naruto Shippuden: Ultimate Ninja Storm 4 leans Reads (Competitive PvP).
Naruto Shippuden: Ultimate Ninja Storm 4 leans clearly harder on execution.
Hide and Shriek
Movement and clicking traps need little dexterity
Naruto Shippuden: Ultimate Ninja Storm 4
Simple inputs; movement and substitution timing matter
Hide and Shriek leans a little harder on reads, though the gap is small.
Hide and Shriek
Outpsyching another invisible human player is the core
Naruto Shippuden: Ultimate Ninja Storm 4
Versus humans, baiting substitutions is the core game
Hide and Shriek leans clearly harder on variance.
Hide and Shriek
Hidden opponent position adds investigative uncertainty
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.
Hide and Shriek
Trap and spell choices reward tactical planning
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.