There's a few counterpoints here. 1. More years of existence does not equal stronger universe. 2. 30 years of lore is technically more like the equivalent of a few years. Less so than Halo, at this point. Not sure if you heard, but the vast majority of SW material is not canon anymore. 3. We do have this thread pop up every month, which means the topic has been done to death. I remember the arguments when the thread was originally posted, and it's been made fairly clear that Halo is just too powerful as a whole. There's a ton of evidence for this in posts from two years ago. I don't think that last bit is even close to the truth. The Precursors are in no way grounded in reality. Both metaphorically and lore-wise, considering they have reality bending abilities as a species.