All fine and dandy if your only intention is for gaming, If this is a pure rebrand then looking at it from another angle. Hawaii Gcn 1.1 is outdated by maxwell gm204 and gm206 with respect to not supporting HDMI 2, it doesn't support 144hz I believe (Gregster experienced this).
The uvd engine is only 4.2 which doesn't support full 4K H.264 video decoding.
Tonga has uvd 5 and Carrizo even has uvd 6. Of course if Amd have updated these blocks then at least it's a positive development.
Then there's the power consumption. Ok 8gb is nice as standard but a single 290/x (rebrand) with 8gb won't have enough grunt for the available memory.
If the r9 370 is a rebrand in both oem and retail of pitcairn v3 that'll be really embarrasing for Amd, we'll know if it is by the lack of freesync support/ true audio and the outdated uvd engine. But in comparison to Maxwell Amd could be really behind due to the rebrands in their lineup in comparison to nvidia if you look at things outside of the gaming fps. This is where the gtx960 is underrated in my opinion as it has superb h.264/h.265 support using the hevc