Seeing that the alliance is still winning on all fronts during the Zandalar raid, and the fact that the war front wont matter in the long run, I'd say both are wrong.
But alas, we all know Sylvanas will magic up a Deus Ex Machina "miracle" that will somehow turn the tide in a childish attempt to make her seem like a genius while simultaneously making Anduin right, because he's the chosen one.
I mean, it's cute to see everyone bring in things like "logic" and "historical battles" but really, the writing never was and never will be good enough for it to matter.
So sit back and wait for Sylvie's McGuffin like we all know is going to happen.