Who gives you these throw-away, propaganda lines?
It is self evident from the results in Ukraine. The Russian Air Force has been unable to establish air superiority over Ukraine. Manned aircraft are unable to overfly Ukraine and do real time interdiction, etc. A la the “highway of death” of 1991. If they had they would have won by now.
In straight numbers the Russians had the means to do this. Their technology and doctrine however were defective and unable to perform SEAD, and so they were stuck with cruise missiles and tactical attacks at the edge of the battle area.
This was so even when the Ukrainian air defense consisted of only ex-Soviet S300 and Buk SAM systems + manpads.
Who gives you these throw-away, propaganda lines?
Well it is day 918? of the Russian invasion of Ukraine... but sure, Russia Strong!