1. Greater Engagement Range

The AIM-9X allows pilots to engage targets from a safer distance. Using the gun would require getting extremely close, increasing risk and reducing reaction time.

2. Higher Probability of Hit

Modern missiles like the AIM-9X are highly maneuverable and equipped with advanced infrared seekers. This significantly improves accuracy compared to a gun, especially against small or moving targets.

3. Off-Boresight Capability

The AIM-9X can lock onto targets at wide angles, meaning the F-22 doesn’t need to be perfectly aligned. A gun requires precise positioning directly behind the target.

4. Safer Intercept Conditions

Closing in for a gun engagement could create dangerous situations—especially at high altitude or near sensitive airspace. A missile allows for more controlled engagement.

5. Controlled Outcome

Missiles are designed to neutralize targets efficiently with minimal engagement time. This reduces uncertainty compared to multiple gun passes.

6. Standard Intercept Doctrine

In modern aerial operations, missiles are typically the primary weapon for intercepts. Guns are considered a last-resort option.

In short, using the AIM-9X Sidewinder was the safest, most efficient, and most reliable way for the F-22 Raptor to complete the mission.