How would this compare "significance" of news about the ceasefire in Israel/Palestine vs, say, a genocide that's large in numbers but smaller in world attention? (edited for clarity, given your reply)
It'd be interesting to see, but I don't fully trust ChatGPT to rate historic events that it already knows are significant. A much more fair comparison would be between events that it doesn't have in it's training data.
But from what I've seen it's pretty indifferent to "sides", it's more focused on raw numbers of people affected and magnitude of the event.