Bookplanet: Foer's wife's book better reviewed than his

Jonathan Safran Foer's 2nd novel is out, and so is his wife's, Nicole Krauss. Already comparisons are odious. She gets a rave (he got a squelch).
"'There are two types of people in the world," one of Nicole Krauss's characters in 'The History of Love' decides, 'those who prefer to be sad among others, and those who prefer to be sad alone.' There are also two kinds of writers given to the verbal tangents and cartwheels and curlicues that adorn Ms. Krauss's vertiginously exciting second novel: those whose pyrotechnics lead somewhere and those who are merely showing off. While there are times when Ms. Krauss's gamesmanship risks overpowering her larger purpose, her book's resolution pulls everything that precedes it into sharp focus. It has been headed for this moment of truth all along."
Already I want to read hers, and I know I don't want to read his. Wonder how negative and positive reviews affect the couple relationship.