I saw them in CA on the first US leg and it was absolutely AMAZING!! Really awesome show and I couldn't have been happier once it was done that they just did the whole album and nothing else... and that's saying something because I actually went into it that day saying "This will be cool but I think I'd rather see them perform any other DT album." And I left saying "that was absolutely the best possible experience and there is nothing would rather have seen them do than exactly that". I wouldn't have even wanted to hear another song after the album was done, which is crazy because I'd happily sit through a 5-hour DT show.
Now they're coming back to CA two more nights but I have no reason to spend money on going a second time. So I'd imagine that if they're having sales issues on this leg it's only because they're playing somewhat nearby regions a second time with the exact same show.