https://fightersweep.com/6024/dogfight-f-16v-viper-versus-j-39e-gripen/
Dogfight! F-16V Viper versus J-39E Gripen: Who Wins?
The Verdict
The F-16V is the clear winner here, because it exists and flies today. It is the most combat proven design in the history of fourth generation multi-role fighter airpower, and it is actual flying and being tested now. I vote for IT as the obvious winner of the F-16V versus J-39E mock-fight.
However, (as a former F-16 operator, this part pains me to say) that if the J-39E becomes a reality, and all the discussed items become real too, IT will be the clear winner. The lower RCS design, the IRSTS, and the higher thrust-to-weight ratio give the J-39E the edge for the top spot on the fourth generation multi-role fighter podium. It will be one highly capable and extremely difficult unicorn to defeat by any capable adversary!