head to head
Call of Duty: Modern Warfare 2 asks more than Disc Jam, and the gap is variance.

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

Execution · Competitive PvP
Reflex disc rallies decided by throw precision and outguessing the human opponent.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); Disc Jam 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
Disc Jam
Volley timing, angles and positioning are pure reflex
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 2
Outguessing human rotations and flanks
Disc Jam
Rallies are won by faking out the human across the net
Call of Duty: Modern Warfare 2 leans clearly harder on variance.
Call of Duty: Modern Warfare 2
Spawn flips and killstreak randomness
Disc Jam
Physics are consistent, almost nothing random
Call of Duty: Modern Warfare 2 leans clearly harder on optimization.
Call of Duty: Modern Warfare 2
Killstreak economy, loadout and map knowledge
Disc Jam
Character kits and throw tech form a thin meta
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.