I find it interesting there's just a $50 gap between the two. Which means .... why does the regular 9070 even exist? If you're spending that kind of money, the difference is negligible and you get a much better card.

This is one of those weird things about AMD's pricing that is easy to miss. They initially do something like this in terms of pricing kind of like the 6000-series cards and then they change pricing after a couple weeks or couple months. When that change happens the stack will probably look more like a 100usd difference between those two cards which would make more sense.
That likely price change would make far more sense to have both of these cards flank nvidia's 5070 pricing. Which I think they may wait on that before saying anything about a 9060xt to see if they change the pricing a bit to better place that card and additional RDNA 4 cards. AMD's gpu side of things can be pretty odd sometimes and this is one of those ways, at least its a better move than price == nvidia - 50usd