I think one of the funniest parts of this whole “planar fins vs lattice fins” argument is the fact that despite graphs demonstrating the high drag issues of the lattice fins, and the (generally) better L/D ratio of planar fins, and the NATO paper specifically stating their high wave drag discredits their use for air to air missiles, the pro-russian players cannot or will not grasp the concept of these fins having pretty clear drag issues
The lattice fins do offer more lift at lower AOA’s, they also offer vastly more drag at all AOA’s according to the graphs.
Lets go for an example:
For a CL of 0.4, the planar fins deflect to roughly 12.5deg vs the lattice’s 8-9deg

At said AOA’s, the lattice fins Cd is roughly 150% that of the planar ones:

Which is how the planar fins exhibit better L/D ratio for given CL’s up to around 0.6, such as at 0.4 as seen in the graph:

The fact that the lattice fins can deflect less for a given amount of lift is a definite advantage for them, but does not change the fact that for fin deflections of up to (roughly) 12.5 deg for the lattice fins, and 20 deg for the planar fins, the planar fins are simply more effective designs.
ie: the R-77 should retain its energy better relative to lift at high fin deflection (12.5 deg and above) than the planar fin deflected above 20 deg AOA, but in all fin deflections below those points, the planar fins are more aerodynamically efficient.
Beyond this point, theres still the fact that the devs have not modelled the lattice fins drag to be unique in any way as it should be, which means that, as stated a while back, lattice fins are getting all their advantages in-game with none of their disdvantages.
This is further supported by the fact that though the R-77 and AIM-7M have almost identical sizes, with he 7M being slightly longer, the R-77 has been given a substantially lower CxK of 1.85 vs the 7M’s 2.3:
So, congrats to the pro-russian players, you’ve once again managed to weasel your way into an ahistorical buff. Its basically an artform how good you guys are at getting free handouts at this point