I think he is focusing on the logo (the tail one). To be honest, I think that the tail one does not like the eagle actually. If they can use their "company logo" on the tail, it may better than the n ...
Well, they want to present themselves as being proud as a 'USA' carrier, therefore they design the tail by resembling the USA national flag (in geometry and color), which is something that US Airways tried (and failed, I think. It doesn't resemble as AA does)