Thankfully, Russia doesn't really have 5th Gen either. Europe has a lot of solid 4+ gen planes: Rafale, Eurofighter, maybe Gripen. And I'm willing to guess that, especially with better trained pilots, these are potentially better than Russia's assortment.

But there remains a question of quantity and determination.

So far their 5th generation fighter program has been an even worse embarrassement than the T14 Armata.

Their own press photos shows uncovered Philips screws on a supposedly stealth aircraft, and their "loyal wingman" drone used the first opportunity near the frontlines to try to defect.

Sure, but that risk is just something Europe has to eat as punishment for buying F-35 instead of building their own, it doesn't affect the new reality that US aircraft cannot be trusted in wartime.