Now i wish F-15A actually had those. DL reconnect would made it quite a bvr monster at its current br (not like it struggles anyway, but it would be hilariously fun)
What i meant to say is that while it obviously keeps more energy at 35km+, no one will sit there for whatever long it takes for sparrow to arrive at that range, and at closer ranges 27ER outaccelerates sparrows still.
old 7P times out, new version hits almost 20 seconds before old version
same 10km 1200kph launch parameters
even half a second after launch there is a small difference and it only grows more with time
R-27ER still has better TTT but Sparrow carries more speed at the moment of impact at 40km
Sparrow:
R-27ER