Ja-37C & D are the only ones with countermeasures.
As someone that’ll be maining them next update, I can say they’re fine where they are.
To answer the original post itself:
No.
In the case of Ja-37C, it has 4x 9Js and 2x Skyflash on a really fast, cold, & nimble airframe.
In the case of Ja-37D, it has 6x 9Ls on the same airframe, but also a ton of countermeasures.
Ton of countermeasures + cold airframe that’s nimble firing 9Ls, and Skyflash if you want, it’s good at 11.7, better than every 11.3 in game.