The MRAAMs on Multirole should be the standard, not the exception. Right now if it says multirole, and it’s not Soviet, you know its price is being inflated by some SRAAMs that are worthless w/o out the MRAAMs. Ideally you need both to have an actually good ASF (which is why the Mig-29m is not good in the role, but is decent at intercepting ground attack planes that can’t fight back), but if you can only have one, the MRAAMs are the ones that are worth having.
If you want an example as to why SRAAMs are bad on multirole, just look at the Chinese JH-7 compared to the Aussie Kahu. Drastically inferior, very rarely kills its target, but costs more because it has the SRAAMs.
I don't know if it is authentic, quite frankly I don't care, gameplay wise the Soviet multirole jets are perfect and should be the standard. They still will have to deal with lower veterancy than dedicated ASFs and so long as they don’t have both types of missiles, they will never win in a head to head fight. What they will be able to do is actually engage enemy planes and if they get on the tail of an ASF, they will actually have a chance of taking it down. These should be jacks of all trades, masters of none, not overpriced ground attack planes.
I am fully aware this will never happen.