wow you mean f4c can easily avoid mig21 at the same BR or IL-28 could escape from saab-105?
While F8e at the same BR is also supersonic and with nice radar missile and IR missile?
The Mig-21Bis is beyond its BR range; and the Mig-21MF, the best Mig-21 within its BR range, dogfights worse.
F-8E has a worse radar missile to the F-4C’s while being slower. The IR missile, countermeasures, and slightly better dogfight capability is what makes F-8E on-par with F-4C.
Saab 105 has to predict all possible intercept courses and pick correctly.