FWIW -- I arrived at my first duty station in February of 1983 and was an ECM flightline worker. The F-4Es at George AFB were a mixture of airframes from 1967-1975 and all had AN/ALR-46 and AN/ALE-40, with the capacity to fly with AN/ALQ-119 jamming pods. The F-4G WWs were assigned to the 37th TFW and the F-4Es were assigned to the 35th TFW. At that time, the A-10 was using the same systems. IIRC, the F-16 used AN/ALR-69 because it was designed to be used in an integrated avionics airframe, which the F-4 never was designed for, or retrofitted for.
Personally, I would like the ability to use the same RHAW and countermeasures that were equipped in the aircraft I worked on, however -- in Vietnam scenarios, it would not be historically accurate.