Rose Oud really has very little to no oud in it, it's a very poor name for the juice. It's really a Rose Saffron fragrance more than anything. And for the $400 price tag, that's outrageous. Oud Ispahan is tough juice to wear. Projection and longevity are enormous, and it's very much an oud-dominant fragrance. Dior's oud is very in your face, you were right, it's very smoky and heavy. You're right about the similarities between this and LO. Take the leather out, replace it with some rose, and you've got OI.
I have objections to both, and don't find them to be the best rose-oud combos out there, Kilian's primarily with the price and overall lack of real oud, Dior's being too in your face, but the price is also unbeatable. If I had to choose a rose-oud combo, I'd still stick with Black Aoud or NY Amber.