[Locke.]

I expected Cersei's position to be incredibly weak this season after her actions in the S6 finale but most people seem to be ignoring it/are scared by her. So far she has destroyed Dany's entire fleet, killed or captured every single one of her Westerosi allies, and been one step ahead of her and Tyrion's plans each time. She has also come into possession of some kind of giant crossbow that she seems to think will be enough to take out a dragon (I'm assuming they'll have dozens of them and won't just be relying on one guy manning one crossbow vs 3 dragons).

Dany has tried to make a new ally in Jon/The North, but Jon's head won't be turned from the real threat beyond the Wall and even if he himself does get caught up in Dany's war, he definitely won't march his army south to help her at this point. She does have Casterly Rock but as Jaime said she won't be able to hold it for long and the Unsullied will eventually have to walk across half the map to get back to Dragonstone as Euron burned their fleet.

So, Cersei somehow has gained the upper hand now, who do you think will win?