The specs are quite similar. 9070 has 56 CUs compared to 64 on the 9070 XT. That's 12.5% less cores, but the same VRAM capacity and bandwidth. Of course, the 220W vs 304W could have a big impact on performance. In general, though, I agree: the 9070 price feels too close to the 9070 XT. Either the XT should have a $649 price tag, or the 9070 should have a $499 price.
I'll believe the availability stuff when these launch and then they don't immediately sell out. Considering the lack of availability for RDNA 3 GPUs these days, I think AMD and its partners will sell every RDNA 4 card produced in short order. Plus, AMD typically seems to produce about 10~15 percent of the number of GPUs Nvidia produces. So, if there were tens of thousands of 5070 Ti cards sold (which is possible), AMD might only have half of that available, even after two extra months. But no one is giving hard numbers on the total number of cards shipped.
None of that is gonna happen though, and everyone knows it. Why talk like we are in some centrally planned economy, where prices are fixed and the only thing that matters is who gets to the front of the line before supply sells out. A 5070 Ti is not selling for $750, and these cards won't sell for under $600 either.
I mean, If you were a retailer and had 10 5070 Ti's that you paid $650 for (assuming that's what the wholesale price is), would you sell them for $750? You'd be crazy to do that when you can easily get $1200 for them right now.