head to head
Call of Duty: Black Ops asks more than Rocky, and the gap is execution.

Execution · Competitive PvP
Cold War-era shooter pairing twitch multiplayer with the cult Zombies mode.

Execution · Competitive PvP
Timing-based boxing with training preparation and opponent-specific weaknesses.
Call of Duty: Black Ops leans Execution (Competitive PvP); Rocky leans Execution (Competitive PvP).
Call of Duty: Black Ops leans clearly harder on execution.
Call of Duty: Black Ops
Gunfights hinge on aim and reaction speed
Rocky
Punch timing, blocking, and stamina control lead the test
Call of Duty: Black Ops leans clearly harder on reads.
Call of Duty: Black Ops
Reading human opponents' positioning and timing
Rocky
Versus boxing rewards baiting and predicting a human opponent
Call of Duty: Black Ops leans clearly harder on variance.
Call of Duty: Black Ops
Spawns, care packages, zombies RNG
Rocky
Fights are mostly deterministic given inputs
Call of Duty: Black Ops leans a little harder on optimization, though the gap is small.
Call of Duty: Black Ops
Class builds, map control, zombies routing
Rocky
Training stat allocation and opponent weaknesses reward prep
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.