Matt may not lead any or barely any channellers at all. I think he will use the dragons against the Seanchan for a nice little twist. they may have eluded to it a little before tuon and matt split.I imagine the forsaken have knowledge of cannons fron the other age or atleast something similar. so they would be able to adapt. He will wreak havoc on the seanchan with them even without so many channellers but might not win or maybe to a draw like he and tuon do in stones. and by the time the last batle comes the dragons will be old hat. Also I seen to remember either RJ or BS saying that the last battle may not be how people think it will be. So maybe the shadow comes down from the blight and that other waygate by toman head or somewhere in those 3 close countries that the seanchan have, and they just take over the continent and there maybe rand and a few others like a strike force or something, have to go in and seal the DO.Remember the light isn't doing well at all, one knock out blow is all they can hope for.