Apart from the fact that the F-4 was the USAF workhorse for many years, it was never really highly effective in ground attack roles, or as a fighter. It was slow, heavy and lacked sophisticated electronics. For instance, it had a difficult time going head to head with even the very old/unsophisticated mig-17 in Vietnam. Look at this aircrafts kill ratio, and its very poor. It seems the f-4 can perform many different roles, but can only perform each one to a satisfactory level at best. Im sure im going to get flamed for this, but I think the f-4 is definately not one of the best aircraft.