Not a good indication. The Vega 64 @ 1546 is 12.66TFLOP, and the FuryX @ 1050/500 is 8.6TFLOP. (so a good 47% more)
However their FPS difference in BF1 according to AMD is just 20% at 2560x1440. Something a FuryX @ 1190/600 (AMD UEFI bios, stock AIO) can come close if not beat.
There is something seriously wrong with the AMD Vega presentation. Clearly something is wrong and cannot be justified. Alternative, they did a computing card trying to cut into that market segment for first time, and didn't bother about gaming. A similarly (1546) clocked FuryX could trash it by a very good margin.
Clearly the IPC is not the same, that is all. People need to stop comparing it to Fury X clock for clock. End performance is all that matters and this is where Vega has disappointed as it has not improved enough over Fury X. With all those extra transistors, time for new architecture, HBM2 and they did not even get 50% improvement...
This pretty much means Vega was not designed primarily for gaming, but for compute.
I do think over time we will get 10-20% improvement though. But I talking about 12-24 months, not in the next few weeks.