How does Absolute Stasis interact with victory condition X or loss condition Y?

How does Absolute Stasis interact with victory condition X or loss condition Y?

It doesn't, per the text on the card. The land is an ordinary land for any game-end conditions.
For instance, you can't win by using Stasis on the land with the last Cities, lose by using Stasis on the last of a Spirit's Presence, Beasts in that land count for Russia's additional loss condition, and the final Ravage in Dahan Insurrection will not affect that land, but any Invaders left there will count against the victory condition.