Have John Dufresne and Mario Vargas Llosa both won awards for their work?
John Dufresne:   In 2012, he won a John Simon Guggenheim Memorial Foundation Fellowship for his work. Mario Vargas Llosa:  In 2010 he won the Nobel Prize in Literature, "for his cartography of structures of power and his trenchant images of the individual's resistance, revolt, and defeat."
yes