Why is MIG-21-bison still 12.3 its better than the MIG-29

Machinery of War Discussion Aircraft
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1

literally better than the mig 29 in every way all it looses is 2 less missiles defiently should be 12.7 the most op 12.3 ever R73s and R27R1s are some of the best missiles for there ranks

2

Although it is an upgraded 3rd generation fighter jets, it might be worth slightly increasing the BR, similar to the F-4EJ Kai or F-5T/TH.