Nothing even comes close to it in performance. That said, WAY too expensive to risk it on such menial tasks as CAS. I've always liked the cheaper and LOTS approach, especially since we are really the only Superpower left. Chinks can't really build anything we can't squash. What we SHOULD have done back in the 90s, was build the Tomcat 2000, A6-F, F-15Es and LOTS of F-16s and take our time with the super fancy stuff.
Gracias.
Dave