Thought a little more about this last night. Although the prophecy itself doesn't seem to contain that much info, I guess we learn that the prohecy was the cause of Harry's parents deaths.
We learn that Harry was the one that Voldemort wanted to kill all along, and that his parents' deaths were just a means to an end. As opposed to voldemort killing Harry's parents, then just trying to kill Harry as a side project.
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