Soldato
Whilst that's not wrong it doesn't tell the whole story between the F-16 and Russia's latest and greatest jets. Yes it's true fighters like the SU-35 has a radar that can detect out to 400km (100km longer then the F-16's latest radar) it's usefulness is debatable as it lacks the sensativity to track targets until there at least within 200km of the fighter.Thats pretty much their only "real" advantage in Ukraine, everything else (longer range radar than Ukrainian MiG-29 but shorter than their Su-27 etc) just isn't really usable in the very limited way Ukraine could attempt to leverage them, as they're missing so much of the rest of the NATO-style support infrastructure (AWAC's, Tankers, EW, Datalinks etc) that makes NATO led F-16's a far greater threat.
As with a lot of other Russian modern weapons the Su-35 is over-hyped and we in the west ha e been guilty of just accepting everything Russia has told us as if it were true without questioning the actual capabilities of such systems. It's only got away with it because it's been fielded against much older and out dated aircraft. Come next year I guess we will see how good it really is.
Another way to look at this is to think that Ukraine wouldn't go to all this trouble of taking it's best pilots out of action for 5 months, retraining ground crews and rebuilding runways just to field an aircraft that was outdone by it's enemy. Ukraine has been begging for these aircraft for long time, I'm sure the commanders there know what their getting and what it can do.