There's this japanese guy that made a lot of analysis on ACs. I wish I can read japanese.
http://dic.nicovideo.jp/v/sm3404179
Edit:
http://topicscollector.blog55.fc2.com/bl...-3418.html
http://dic.nicovideo.jp/v/sm3404179
Edit:
http://topicscollector.blog55.fc2.com/bl...-3418.html