Ok, so the Ruined Lab variant is obvious: +1 Card
And, the ruined terminal Silver (no idea which one he'll pick) is going to be +$1.
The interesting question is: will the Ruined Village be +2 Actions or just +1 Action? I'm guessing +2 because outside of some Conspirator niche cases, an action that does nothing has no redeeming quality.
+1 card has no redeeming qualities, either.
Well there's a difference. Ignore KC, TR, conspirator, HoP, peddler, etc. Then there's no reason to play the +action. There's no detriment.
Sometimes, however, you do want to play the +1 card.
I think the distinction is that "+1 Buy" enables you to get some benefit out of having the card in your deck, however niche a situation it might be when you want it. But "+1 Card" (combos with specific other cards aside) only ever gives you what you would have had if you hadn't had it in the first place, so it doesn't really help.
+1 Card - Eats your action.
+1 Action - Eats a card slot.
+1 Buy - Gives you +Buy! Now I can get two Provinces!
+$1 - Gives you a coin! Now I can afford one Province!
Now, nothing says that all the Ruins cards have to be potentially useful, nor that they need to be roughly equivalent in strength. But there IS a fundamental difference between the first two, which require combos to do anything for you, and the last two, which are simply meager benefits.