head to head
Call of Duty: Modern Warfare 2 asks more than NBA Jam Tournament Edition, and the gap is optimization.

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

Execution · Competitive PvP
Arcade basketball testing twitch timing and head-to-head prediction over deliberate chaos.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); NBA Jam Tournament Edition leans Execution (Competitive PvP).
Call of Duty: Modern Warfare 2 leans a little harder on execution, though the gap is small.
Call of Duty: Modern Warfare 2
Fast time-to-kill rewards raw aim and reflex
NBA Jam Tournament Edition
Turbo timing, steals and shot releases reward fast hands
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
NBA Jam Tournament Edition
Head-to-head play is constant guessing of the other player
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
NBA Jam Tournament Edition
On-fire mechanics and rubber-banding inject chaos
Call of Duty: Modern Warfare 2 leans clearly harder on optimization.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
NBA Jam Tournament Edition
Roster picks and hot-spot knowledge add a thin layer
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.