What is the difference between DOA5LR Core Fighters and the Demo/Trial on Xbox One?

Situation:

• I initially bought DOA5U on X360 and I received the update to DOA5LR. Not problems with that.
• I bought DLC characters and costumes on the X360.
• I just got an Xbox One and found that I can buy DOA5LR the full game and DOA5LR Core Fighters in the store, but Core Fighters is also available as a demo[?], so I tried that first (version 1.01A).
• The Xbox Store region is Europe.

Traditionally I associate a demo version of a game with some kind of expiration date or very limited functionality, but I don't see how functionality is limited, because playing online works in this demo.

I would like to use DLC I purchased on the X360 on the Xbox One. I already installed some costumes and characters, the character selection screen in the game however stays the same.

I tried searching the web for information about the differences between Core Fighters and the demo version, but I still don't have a clue what I will get from buying Core Fighters on the Xbox One. Will I be able to use DLC with it? Does it include additional content over the demo? I have the impression that it will be same and the no refund policy makes me hesitate trying it out.

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In case someone wants to leave a comment like: "Just buy the game if you want to play it!" I did, I bought DOA5 and DOA5U for X360 and DOA5LR for PS4.