CB vs. Crown

Now that the CB has been refitted, are there major differences? I hear everyone complaining about rocking on the Crown....structurally would the CB be similar and thus more prone to rocking movement than other ships??

What about amenities....both about the same??

Finally, preferences....any?????

I am in the planning stages of next year's cruise. Will be on the CB in a few weeks...Have never sailed on the Crown.