Just going to leave this here.
This is the performance difference amongst R-27ER (EA is just ARH ER), Aim-120A, R-77, and Fakour with a 50km launch and a 2400kph (two planes going supersonic head-on at 10,000m).
The time to impact is the following.
Fakour = 32 seconds.
R-27ER/EA = 37 seconds.
Aim-120 = 39 seconds.
R-77 = 41 seconds.
From a BVR perspective…the R-27EA would probably work out as a slightly better Aim-120A with the drawback of being launched from something with abysmal flight performance (MiG-29SMT) and limited to only 2 of them. Or launched from something with good flight performance and up to 6 of them…but has abysmal radar performance (Su-27SM).
The range advantage that the R-27EA would also probably be offset by the fact that F-15C with AMRAAM and F-16C with AMRAAM loadouts are able to climb better, reach supersonic faster, and be able to launch their missiles sooner or from thinner air.