I don't remember Gowi ever having Captain Marvel call to the X-men for help. In fact only PC characters have responded and are part of that arc. Never once has he shown in any capacity that the X-men were going to play a role in that story other than one little line of text. 

Seriously, can we stop this. It is a little annoying that we seem to have a debate like this arise every time somebody asks a simple question. The last time this happened was when I asked about the Watchtower. We don't need to argue every time someone needs something to be cleared up. This is like, the third time.  

*EDIT
So can we agree that the Xmen exist but let's keep them on the down low until we have players to fill out a team. Does that satisfy everyone's needs? No one has to go back and edit a post.