In my personal opinion, much of what the other ships offer are geared towards keeping the guests super active, and thirsty and hungry a lot so they'll spend more money on drinks and specialty dining. They're offering a party atmosphere so much of the time that you keep moving and doing things like gambling, riding the water rides and other athletic activities just so you won't have an opportunity to possibly get bored or relax. At least that's how I see it, and that's fine, if you want super busy and active activities where you're always go go go, that's great. Personally I enjoy the relaxing pace of
DCL ships, when I cruise I want time to be able to take in the scenery, watch the waves go by, sit around and chit chat with my fellow cruisers and not rushing off every 10 minutes or so to some event or activity that will tire me out. That's how I see the differences, for me Disney is the difference and it's one I will gladly pay for each time.