If you take a look at the game's encyclopedia, this is what it states. (Sorry for the Spanish, can be understood anyway).
nullEven more important than the speed, I think that the range is absolutely nerfed, being the true real range of the missiles up to 130km, and also the Gs, which are up to 26 Gs in the 27ER.
To make things more even and fair, proper numbers have to be implemented in these missiles.