Bust a move 4 modification

Recently I have been playing Bust a move 4. There is a group of charts named "Player VS Computer" with 3 Story mode charts (each one with a different difficult). The problem is that you can't see the difficult in the proofs. I request to delete 2 of the charts leaving the best score of the users. Chart should be renamed as "Story mode". Group of charts is here:

https://www.videogamesrecords.net/en/bust-a-move-4-game-g828/player-vs-computer-group-g2918/index

I guess it can be proven with video proof. Let's turn these charts into video proof only, we delete all picture proofs and that's all. No need to delete charts!