For right now, it sounds like a (very interesting) glitch. Here's a link to the photos...
http://www.picturetrail.com/gallery/view?p=999&gid=5598727&uid=2789056

cool.. i wanna try this!

what is so amazing about this you can fight againts johnny cage in outworld at least if you can call that a fight is actually a 12 hit combo mission once you complete this you 'll get 400 koins
at coord . H-8 out world same place where you find chest for krypt DO

One of the members there actually got Johnny onto land in the Kochal area and said it took him 5 game years to finally get him there. Also that so far there is no way to talk to him, but you can hit him until he is knocked out. Other than that nothing special so far.

The only way to fight Johnny Cage is in Konquest that I know of.

I'm in the process of trying this now. It's funny that the fellow you speak of said he got Johnny to land on the Kochal area. I've been going for about 2 years now and my Johnny isn't even heading towards Kochal. There is a platform similar to the one he started on that is very near where Moloch is standing. My Johnny is very near that platform now. I've always wondered about that platform because of the two "skull on a stick" things that are right out from it. Those things usually mark the entrance to a bridge or cave. I've always thought they looked suspicious. Now that Johnny is heading towards them, I'm really starting to wonder. I'll keep you guys updated on my progress.

I am also attempting this as I type this. You are right he has just started to move towards Moloch's area now.

Well, mine is getting closer and closer to land. He made a slight turn to the right and it appears that he is going to make landfall at the same spot that Nitara and Cyrax were talking (man, I feel like I'm giving a Hurricane forcast). I'm at work now but I'll work on it more tonight. It's strange that he seems to be taking different paths for different people.