Building comparison
head to head
Call of Duty: Modern Warfare 2vsHalo 3
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.
Call of Duty: Modern Warfare 2
Execution · Competitive PvP
Blockbuster 2009 sequel famous for killstreak chains and frantic multiplayer.
Halo 3
Execution · Pure Mechanics
Trilogy capstone whose equal-start arena multiplayer defined a console generation.
Call of Duty: Modern Warfare 2 leans Execution (Competitive PvP); Halo 3 leans Execution (Pure Mechanics).
Call of Duty: Modern Warfare 2Halo 3
Axis by axis
Execution8 vs 8
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 2
Fast time-to-kill rewards raw aim and reflex
Halo 3
Precision aim and grenade-melee timing
Reads6 vs 5
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
Halo 3
Equal-start fights reward predicting humans
Variance3 vs 2
Call of Duty: Modern Warfare 2 leans a little harder on variance, though the gap is small.
Call of Duty: Modern Warfare 2
Spawn flips and killstreak randomness
Halo 3
Equipment pickups and spawn variation
Optimization5 vs 5
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
Halo 3
Power-weapon timers and map control
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.