The games on AES or Mvs carts are identical save for the pinout. So placing an Mvs game via converter in a USA AES will simply get AES USA settings. The bios settings allows you to choose Arcade or US/Japanese settings. Some of my games have Spanish or even Portuguese settings as well. The point is that all games, AES or MVS, have all the bios information within the games. The bios simply chooses what to show. This determines blood, bounce, nudity, language, and region. For example a copy of SSII On a USA AES will be in English, green blood, and no fatalities. When you beat someone they just put a kneel down and give up. Put that same cart in a Japanese system, you get blood, bounce, fatalities, and all in Japanese. Get it?