It is, but it's really about a mindset. The United States has generally had a huge radar, aircraft, and weapon advantage for the last 50 years. Giving up the advantage in "stick length" makes everybody uncomfortable. The other fear is the development of DRFM jammers. People are scared they will show up for the next air war and none of the weapons will work.
As a platform the F-22 is vastly superior to all of its competitors in the air to air arena. That doesn't mean the Air Force won't try whining for additional funds to make it better. That's the Air Force way.