head to head
Call of Duty: Modern Warfare 2 asks more than Naruto to Boruto: Shinobi Striker, and the gap is execution.

Execution · Competitive PvP
Blockbuster 2009 sequel famous for killstreak chains and frantic multiplayer.

Execution · Competitive PvP
Team arena brawls testing mobile combo execution and reading enemy engages.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); Naruto to Boruto: Shinobi Striker leans Execution (Competitive PvP).
Call of Duty: Modern Warfare 2 leans clearly harder on execution.
Call of Duty: Modern Warfare 2
Fast time-to-kill rewards raw aim and reflex
Naruto to Boruto: Shinobi Striker
Aerial movement and combo timing decide 4v4 skirmishes
Call of Duty: Modern Warfare 2 leans a little harder on reads, though the gap is small.
Call of Duty: Modern Warfare 2
Outguessing human rotations and flanks
Naruto to Boruto: Shinobi Striker
Human opponents fake engages and rotations constantly
Call of Duty: Modern Warfare 2 leans a little harder on variance, though the gap is small.
Call of Duty: Modern Warfare 2
Spawn flips and killstreak randomness
Naruto to Boruto: Shinobi Striker
Some matchmaking and map objective randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
Naruto to Boruto: Shinobi Striker
Class loadouts and jutsu matchups reward study
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.