[simpleman]

When a conventional army has to turn to "hit & run" asymmetric warfare, it means it has lost its large formations.

Ukraine started with 24 formations comprising over 300,000 men. All of these suffered significant losses. Its best armies, 54th Mechanised, 95th Airmobile, etc have lost ability to organise large counter offensives.

In contrast, Russia started with less than 100,000 men. Ukraine outnumbered Russia by 3 times. But Ukraine lost much of its Navy, Air defenses, Airforce within the first 24 hours. 

Thus we dont get to read about tank battles, naval battles or aerial dogfights between Ukraine vs Russia. Or Ukraine air defense taking down Russian cruise missiles. But we did read about "Ghost of Kyiv" which turned out to be fictitious.

IMO, the Nato-trained Ukrainian Armed Forces was overrated. 

And if Nato fight like Ukrainians against Russia, they're doomed.