Does Call of Duty: Modern Warfare 2 Come Bundled with Xbox 360?

No. Call of Duty: Modern Warfare 2 (2009) was sold separately. Xbox 360 bundles typically included:

• Arcade/Core/Pro/Premium consoles with no game or a pack-in like Hexic HD (Arcade) or Lego Batman / Pure / Sega Superstars Tennis (holiday bundles).
• MW2-specific bundles existed (e.g., "Modern Warfare 2 Limited Edition 250GB Console") but the game was a separate disc/code in the box—not pre-installed on the hard drive.

You must purchase MW2 separately (disc or digital) for any standard Xbox 360.