The content is made with MUGEN 1.1, not with Ikemen GO. Because MUGEN 1.1 has KeepAspect function, the stage localcoord of your character is 640,480 (4:3) aspect ratio, so the aspect ratio of this video is 4:3 SD.
If there are SFXs from the original game, it should make some of the MUGEN Authors who made Melty Blood willing to come back (to make MBTL characters).
For me, I just want Noel's own SFXs (Slash FX and Dust pictured below), No other characters are required. Image from Mizuumi Wiki.
By the way, thank you for the MAAB article. I can finish Iori Yagami and Riesz (especially Support Knights).