Let’s pull up some statistics. These statistics will be related to Delta V, which is the main component in a missile’s range.
AIM-7M: 955 M/S^2 total. 4.5 seconds of boost and 11 seconds of sustainment.
R-27"R": 692M/S^2 total. 6 seconds of boost and no sustainment.
S530D: 975M/S^2 total. 2 seconds of boost and 8 seconds of sustainment.
SuperTEMP: 798M/S^2 total. 3 seconds of boost and 4 seconds of sustainment.
As you can see, the Sparrow has over 150% the delta V of the R-27R. Additionally, this DeltaV is delivered over the longest time, which means airspeed, and thus maneuverability is also sustained for the longest time.
This is reflected in game. The R-27R is a good missile while it is burning but quickly peters off once it has stopped, which comes very soon after launch. This is the way all large Russian AAMs operate up until the R-27ER. The Sparrow maintains speed and maneuverability for a long time after it is launched, which translates into a higher probability of kill at a longer range. Thus, the sparrow is much better than the R-27R. We know that.
The SuperTEMP and S530D follow the same pattern, they have more DV overall, but also deliver that DV over a longer time, resulting in the missile remaining lethal for longer.
So, with how drastically better the sparrow is than the R-27R, the Russians deserve another good weapons system to use on the MIG, right? Enter the R-73. It is not very useful in the BVR fight, but if a player is skilled enough to make it to the merge, they suddenly become very dangerous, as the R-73 is much better than the AIM-9L.
But, because of NATO’s far superior radar missiles, the MIG-29 will not always make it to the merge. NATO has a chance to beat it, and it has a chance to beat NATO. Thus, balance AND HISTORICAL ACCURACY are both achieved.
If you are hastily typing your reply, please read through the whole post, I do not want you ignoring my points again!