Not true in the slightest. The Migs flight model is so terrible it’s hopeless in a gunfight, and R-27ERs can be multipathed, and R-73s are easily flared.
For air RB in general, the Mig-29G is still worse because of the much worse radar/RWR, and endurance, and fewer missiles.
As long as what’s coming at you is an AIM-7, it doesn’t matter whether your RWR is good or not.
Missiles are also used to force a good approach angle, not just to get kills.
For example, if you’re in an F-16C and a Gripen is 1 km behind you, if it fires an AIM-9M you can flare it and still accelerate away if you do everything correctly. But if the Gripen has an R-73, you’ll have to turn extremely hard to dodge it (which never be :v), which forces you into a close-range dogfight that you will definitely lose.
And yes, the F-15A does have better situational awareness — I don’t think that even needs to be mentioned.
And RWR matters a lot in general air RB, because you won’t just be facing Aim-7s.
Just pre flare, and keep flaring. Their IRCCM isn’t as strong as it used to be, and I’ve found it quite easily flared most of the time.
In air RB the F-15A is miles better than the Mig-29G, and it’s only in a 1v1 where the Mig has a chance.
