I think Gilmour and Waters are so different from each other, and yet that's what made it work. They both need each other, whether they like it or not, because neither has done nearly as well on their own.
Gilmour's solo albums are very enjoyable; Waters' are unlistenable. Even back in the 70's Gilmour's self-titled solo album was a terrific listen; "There's No Way Out of Here" is an amazing song about some of the same subject matter Waters goes on and on about, but Gilmour's encapsulates the sense of dread and entrapment in a listenable song. Water's solo stuff tends to hector, lecture and grind along.