Sorry not a direct comparison but....
My RV does not have a dinette. It has a table that you set up on pedestals in front of the couch instead. When I replaced the flooring, I did not put the mounts for the pedestals back in thinking I wouldn't miss the table. But...I miss the table. So in answer to your question, I don't miss having a dinette as much as I do the table/prep space. If you have a table that can be easily set up in front of the couch then I think you'll be okay. The upside is that the lack of a dinette makes for a nice lounge area when the table is not set up.