Pluriversal/ pluriverse is different from pluralism. If we talk about World-Making in a Pluriverse, we don't refer to the pluralism within the "one-world-world" (Escobar), but rather to a world where many worlds, worldviews and epistemologies fit.
Pluriversality goes beyond the idea of tolerance of different approaches. To talk about Pluriverse makes it difficult to put one particular (the own) worldview and description (i.e. the own universe) in a position of priviledge.
# See also
Mignolo on Pluriversality html 
Arturo Escobar, "Commons in the Pluriverse," in Patterns of Commoning. webpage