head to head
Boxing asks more than Naruto Shippuden: Ultimate Ninja Storm Revolution, and the gap is execution.

Execution · Pure Mechanics
A two-minute test of joystick reflexes and simple punch-trading rhythm.

Execution · Competitive PvP
Simple-input arena fighting decided by baiting human defensive resources.
Boxing leans Execution (Pure Mechanics); Naruto Shippuden: Ultimate Ninja Storm Revolution leans Execution (Competitive PvP).
Boxing leans clearly harder on execution.
Boxing
Joystick speed and punch timing decide the two-minute bout
Naruto Shippuden: Ultimate Ninja Storm Revolution
Combo and counter timing on intentionally simple inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Boxing
A human second player can be baited and predicted
Naruto Shippuden: Ultimate Ninja Storm Revolution
Baiting a human's substitutions and guard breaks matters
Naruto Shippuden: Ultimate Ninja Storm Revolution leans a little harder on variance, though the gap is small.
Boxing
Nothing hidden or random in the ring
Naruto Shippuden: Ultimate Ninja Storm Revolution
Fully visible fights with nothing hidden
Naruto Shippuden: Ultimate Ninja Storm Revolution leans a little harder on optimization, though the gap is small.
Boxing
Scoring rules are shallow; positioning tricks are quickly learned
Naruto Shippuden: Ultimate Ninja Storm Revolution
Team and awakening type picks are a shallow solvable 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.