My view is that armor and air have both been shown to be lacking in the present unpleasantries in The Ulraine.
Gas about "the old ways" is that: gas.
Ukraine has avoided massive tank-on-tank engagements so far.
Russian AF has also been underwhelming to say the least.
But historically most Russian equipment, Russian doctrine and training vs. NATO has lost in every single regional conflict.
MiG-21 in Indian service pretty much held its own against Paki F-104, but that was a long time ago and both nations used Western doctrine and training.