That 50% average 100% minimum fps increase seems a dream, yeah. But the raw facts say the Vega56 is overall a bit faster card than the 1070. With a sync monitor, it's an absolute winner. And with the drivers in the coming weeks and months, a ~10% performance increase without HBCC doesn't seem impossible if you check the RX480 now and then reviews."Fine wine" is such a lame myth people need to get sober and realize that the mythical performance increase over time will be minimal and will not allow AMD GPUs to move a tier higher.
"And given how well AMDs big GPU oced in the past, I wouldnt expect vega 56 to keep up with the 1070 OC to OC."
Not everyone is using OC on cards, btw.