User blog comment:B214/Question and Answers 6/@comment-207.242.44.6-20181119201843/@comment-2607:FB90:6037:2C10:4079:21BE:C3CE:1D1E-20181120040655

Those four count as one considering that it was Balls of darkness. And further more how do vider compare to apophis because let me renind you that vider with his boots and kicking techneqtes rival Thor(who in the top 10 strongest) but increase even further by an scale mail and yet Issei with true dxd was having a harder time with apophis than had with pseudo dxd against vider who further enhance himself with magic.