Gun classes in Knights of the Fallen Empire

One big thing I have been thinking about when it comes to this expansion is how on earth are gun classes going to fit into the story of this expansion? I mean, it looks as if we will be battling a lot of force sensitive's, seeing how the Eternal Empire's soldiers are force sensitive. So yeah, my question is how do they make gun classes be able to defeat these force sensitive soldiers and have it make sense. I presume near the end of the expansion we will also have to fight Valkorion, and yet again I don't see how a gun class could possibly defeat him.