head to head
Call of Duty: Modern Warfare 2 asks more than Mario Hoops 3-on-3, and the gap is execution.

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

Execution · Competitive PvP
Stylus-execution arcade basketball spiced with item randomness and human defense.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); Mario Hoops 3-on-3 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
Mario Hoops 3-on-3
Stylus dribble inputs and shot timing carry the game
Call of Duty: Modern Warfare 2 leans clearly harder on reads.
Call of Duty: Modern Warfare 2
Outguessing human rotations and flanks
Mario Hoops 3-on-3
Human defenders adapt to your drive patterns
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
Mario Hoops 3-on-3
Item drops and coin spawns swing possessions
Call of Duty: Modern Warfare 2 leans clearly harder on optimization.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
Mario Hoops 3-on-3
Character stats and special shots are quickly mapped
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.