Results like this make me feel like AMD reverse engineered maxwell/pascal when they did Navi + added async ability which makes it perform like turing.
The reason for this is Navi and Turing almost perform exactly the same clock for clock as a computerbase.de article showed when it was first released.
In addition, games where AMD had strong advantages over Nvidia with GCN are now shrinking to completely gone.
Similarly games where Nvidia was stronger over AMD like unreal engine 4 games, AMD performs very similar to Nvidia hardware.
Looking at two new releases doom eternal and resident evil 3, it demonstrates evidence of this hypothesis.
This rx 5500xt for example performs slightly better than a RX 580. Anandtech shows an even larger 8% performance advantage for the 5500xt.
But in doom eternal for example, while old GCN hardware are showing strong superiority over old pascal hardware(see gtx 1060 vs rx 580), Navi based hardware just doesn't look as impressive in terms of gains and performs basically the same as turing considering the teraflop count.
While games where GCN shines AMD punches above it's weight class considering its age, Navi based hardware just doesn't show this and start behaving much like Nvidia's hardware. Looking at the chart above, you will see a 5500xt fall way behind compared to a card that is normally equal or faster than which is the rx 580. The performance it shows resembles something more along the lines of gtx 1060 which kind of flops in performance vs GCN.
And top cards from AMD(aside from radeon VII) like the 5700 and 5700xt are performing like turing cards tflop for tflop.
Resident evil 3 repeats this behavior as well.
Looking at the 5500xt, it performance again is more pascal/turing looking than GCN. While normally you would expect the 5500xt to out perform a rx 580 slightly, it gets crushed by it just like gtx 1060.
Now look at unreal engine 4 games which have typically been Nvidia strongholds are now performing very similarly to Nvidia tflop for tflop.
Look at the GTX 1080 for example vs Vega 64. Being an unreal 4 games, gears 5 shows the typical Nvidia advantage. But with Navi, you see AMD performs similarly to Nvidia hardware tflop for tflop.
Navi hardware seems to the same strengths and weaknesses(something it should not inherit if it's not a copy) as Nvidia cards now. When you combine how similarly they perform clock for clock as shown in the comparison below, I think AMD borrowed quite a bit from Nvidia for Navi.