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;
  • You can't 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 does not happen in that land, but any Invaders left there count against the victory condition.