To be fair, these features should have came with the aircrafts themselves last major update. If the Nighthawk can get its stealth (primary function) with the update it is added in, the Rafale/Eurofighter should have had their primary functions (reduced signature and sensor fusion) added with them.
I should note I said primary functions and not sole functions or reasons, there are secondary features of the aircrafts as well. However, there is no other reason in real life for other countries to have bought the Eurofighter and Rafale over the F-15/F-16s if not for these primary functions. Other planes can also fly and shoot missiles, and have AESA radars, that is nice. But the primary functions over previous generations were these systems.
The Nighthawk can also bomb, fly, and do its thing, but its primary function is stealth. That is the main attribute. Likewise, the main attributes of the Eurofighter/Rafale were reduced signatures and sensor fusion. Yet, it has none of those and didn’t have it added with them.
Something interesting that the developers stated, was that the “calculation” required the Eurofighter to conduct several movements. I’m not sure if that is true/false, but in the event that it is true, how would that be implemented? Require the Eurofighter to do 10 seconds of manuevering before it can fire from the IRST?
In game however there are many reasons why these aircraft are more significant, mainly because those nations in game with Rafale / EFT don’t have F-15/16 and they are hugely iconic aircraft people want to see.
The F-22 is also a hugely iconic aircraft that people want to see, and there are many reasons why the F-22 would be significant if added to the game without its primary attribute/function (stealth). It would still be a very formidable aircraft just based on its flight performance alone.
However, it would not be right to add the F-22 without its stealth. That is the case here with the Eurofighter/Rafale by not having their sensor fusion and reduced signature added alongside it which are their primary attributes/features.