Ground realistic BR’s make no sense for these two. MiG-21bis has:
- better Flight Model
- stronger engine
- more missiles (6 vs 4)
- better missiles (R-60M vs R-60, access to R-13M)
- better cammos (no aluminum foil indentations)
Meanwhile USSR has no Fighter Jet at 10.0, only Strike Aircraft: Su-25 and Su-22.
At the same time MiG-21bis can’t go up to 10.7 because MiG-23ML/MLD are already there.
And now F-5A/C are being moved down from 10.3 to 10.0 which makes little practical sense since USA has no 10.0 lineup withtout marketplace vehicles or SPAA.