I only played it out once. But why would you wanna replay it 2 times for such a sucky ending..? It makes the whole experience a bit pointless imo.
After finishing LS, I wanted to see if the DS ending was better so I replayed. After finishing the DS ending which sucks even more, I thought I might have miss out something the first time I played LS, so I was back to play it though once more and again the ending sucks.
So either way, I'm not getting any satisfaction.