I see a lot of Carnival cruisers bashing the Oasis & Allure without having even sailed on them. Not sure what their justification is for doing so.
I have never seen a review from anyone who has actually sailed on the Oasis bash her though. Some seem to be skeptical before, but once experienced they seem to rave over the mega ship.
Again I like Paul's comments about the size should matter for something...not just adding cabins!