How far off is Ukraine from a peer, though? What are they missing that the US would have in the same conflict (other than sheer numbers)?

Stealth aircraft? Russia has been deploying those.

Naval power? Not really relevant in the Black Sea, particularly with Russian naval defences and antiship missiles.

This is what modern warfare looks like. The only reason this is a shock is because the US has spent the past few decades bullying terrorists in the Middle East.

Thing is, air superiority doesn't do jack shit because drones aren't really operating in "airspace," they're operating barely above the treeline.