head to head
Call of Duty: Black Ops asks more than International Superstar Soccer 2, and the gap is execution.

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

Execution · Competitive PvP
An arcade soccer game testing ball control and prediction against opponents.
Call of Duty: Black Ops leans Execution (Competitive PvP); International Superstar Soccer 2 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
International Superstar Soccer 2
Passing, shooting and dribbling timing decides plays
Call of Duty: Black Ops leans a little harder on reads, though the gap is small.
Call of Duty: Black Ops
Reading human opponents' positioning and timing
International Superstar Soccer 2
Human opponents juke and feint, demanding prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Black Ops
Spawns, care packages, zombies RNG
International Superstar Soccer 2
Ball physics and deflections add some chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Black Ops
Class builds, map control, zombies routing
International Superstar Soccer 2
Formations, tactics and build-up play matter underneath
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.