Saw an interesting bit last night on Reddit about how Russia's actually in kind of a bad spot now. UK's airlift of NLAWs (anti-tank weaponry that's basically "point at the tank for three seconds, press a button, and the tank dies" that is highly effective against T-90s, Russia's main battle tank) to Ukraine means that if Russia does invade, their tanks are going to get chewed to shit. This is the same reason Assad got in trouble in Syria; the only reason he was able to turn things around was because the west turned off the arms spigot over terrorism concerns and Russia started providing air support.
Yes, Russia will have air superiority, which will suck for the Ukrainians, but territory gained for Russia won't be the cakewalk that everybody was concerned about. Russia either pushes ahead with this and gets a lot of conscripts killed (another thing - the Ukrainians are defending their home territory; Russia is invading with a bunch of draftees with shitty morale) or pulls back and goes home which makes Putin look bad either way.