I've read The Flood by him: it was enjoyable, but I don't recall it rocking my world. As I understand it he's had at least two very different periods to his writing, and so it may be the latter period was more pioneering. Or perhaps he just doesn't read as well in translation.
The committee chair's announcement about US writers was patently silly and sadly typical of the unreflexive racism that inhabits a portion of the European left. What I found especially revealing was his claim of 'insular[ity]': I took that to be a codeword protesting Coca-Colonisation.
On a completely unrelated note, I think it'd be really cool if a graphic novelist, or an author associated as much with graphic novels as with non-graphic literature, won the award one year. For example, I think Maus as a work of cultural expression is on a par with Midnight's Children. To have a graphic novelist would really signal that the world literary community is moving with the times.