Originally Posted by
bioblot
But the OP specifically highlighted that 28 passengers in upper J only have one loo. They don't, they have three to choose from without leaving business class.
I think what was meant was that the rear-most J cabin upstairs only has one loo for 28 passengers. The other two loos are forward of the front cabin and thus require a somewhat larger middle of the night stumble in search of relief than in existing cabin configurations.