I play DeeJay as my secondary. Yesterday I was playing Guile against another DeeJay and he used the slide as an anti-air into Climax Beat. I was blocking and it landed. I went into the training room and couldn’t pull it off. I can’t remember of the slide puts your opponent into a juggle state.
You have to slide right under your opponent to put them into a juggle state. Also the slide usually does not work on empty jump ins. Try it against E.Honda or Zangief… it seems if they are the easiest to put into a juggle state