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

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

Execution · Competitive PvP
An arcade soccer game testing ball control and prediction against opponents.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); International Superstar Soccer 2 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
International Superstar Soccer 2
Passing, shooting and dribbling timing decides plays
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
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: Modern Warfare 2
Spawn flips and killstreak randomness
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: Modern Warfare 2
Killstreak economy, loadout and map knowledge
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.