So you are saying their performance class is not so different.... I would say that they ARE different - the 980ti, at a year old, is still playing pretty much every title at excellent FPS.... It will almost certainly be the case for another year to come...
You're basing everything on DX11. That's why you fail to understand that AMD's cards have a lot more longevity than is apparent under DX11. You only have to look at the R9 280X AKA HD7970 under Doom Vulkan. Reports of close 125% performance increase is not uncommon. No, not 25%. 125%, as in, more than twice as fast. It's the reason the chart looks like this, with nVidia's 700 series from 2013 on the bottom of the chart, while AMD's 7000 series from 2011 is between a GTX 960 and a GTX 970....
If you are telling me that the 480 will perform as well in two years, you really are a fool.... It's already inferior to this card with a year's difference!!
You don't get it... The fool is you because you think things will be like DX11 forever. You're applying the longevity of nVidia cards to discredit AMD's longevity. Apples and oranges. AMD's cards age better and that has been proven over and over. Whether it's driver overhead or whatever argument you want to use, AMD's cards are competitive in performance at their release, and their performance gets significantly better with time, unlike nVidia's. Or are you going to deny this also...?
But again, that's not the 480's job! It's a mid-tier card which is really meant to compete with the 1060... We've already seen that the 1060 will be the superior card - but will cost more.... Exact numbers will be out soon I'm sure.
Well, you're gonna be in for a surprise. We'll see a lot of AIB 1060 compared to the reference RX 480, where the 1060 will win in DX11. Then when say a Sapphire RX 480 Nitro is benched against the 1060, the 1060 will lose slightly under DX11 right now, and will literally wipe the floor with it under Vulkan.
To keep carrying on about this card as if it's superior to high end cards is just pointless... It IS cheaper though- guess you count that as a win...
If you can get GTX 980 performance for $200, that is actually superior to a high end card. Unless you're gonna start arguing that the GTX 980 is a mid range card...
In any case... Using Computerbase.de as a reference... Look at the following. We are half a month after release of the RX 480. Let's look at the performance changes between the launch drivers 16.6.2 and right now 16.7.2, two weeks later, compared to GTX 970 and GTX 980. And likely you have a grudge against Ashes of the Singularity, so I'll leave that one out. As a compensation I will leave the obvious extremely nVidia-biased games out... Here we go;
Assassin's Creed: Syndicate – 2.560 × 1.440
RX 480 7% slower than reference GTX 970 with 6.2, 1% slower with 7.2
Call of Duty: Black Ops III – 2.560 × 1.440
RX 480 27% faster than overclocked MSI GTX 970 with 6.2, 35% faster with 7.2
RX 480 13% faster than reference GTX 980 with 6.2, 20% faster with 7.2
As a side note, it's only 8% slower than a 980Ti with 7.2.
Dirt Rally – 2.560 × 1.440
RX 480 2% slower than reference GTX 970 with 6.2, 4% faster with 7.2
F1 2015 – 2.560 × 1.440
RX 480 5% slower than reference GTX 970 with 6.2, 1% faster with 7.2
RX 480 11% slower than reference GTX 980 with 6.2, 5% slower with 7.2
Far Cry Primal – 2.560 × 1.440
RX 480 6% slower than reference GTX 980 with 6.2, 1% slower with 7.2
GTA V – 2.560 × 1.440
RX 480 11% slower than reference GTX 980 with 6.2, equally fast with 7.2
Just Cause 3 – 2.560 × 1.440
RX 480 8% slower than reference GTX 980 with 6.2, 1% faster with 7.2
Rainbow Six Siege – 2.560 × 1.440
RX 480 5% slower than reference GTX 980 with 6.2, 3% faster with 7.2
The Division – 2.560 × 1.440
RX 480 as fast as OC'd MSI GTX 970 with 6.2, as fast as reference GTX 980 with 7.2
The Talos Principle – 2.560 × 1.440
RX 480 4% slower than reference GTX 970 with 6.2, 2% faster with 7.2
The Witcher 3 – 2.560 × 1.440
RX 480 4% slower than reference GTX 980 with 6.2, 1% faster with 7.2
XCOM 2 – 2.560 × 1.440
RX 480 1% slower than overclocked MSI GTX 970 with 6.2, 6% faster with 7.2
You likely hate Hitman, but, the RX 480 is faster than the 980 Ti in that game already. That is using their best performing API, as in DX11 for 980 Ti and DX12 for the RX 480. But for you that won't count as anything anyway.
And oyeah, I should mention... All these results are the RX 480 running at 1137 MHz with 6.2 and 1152 MHz with 7.2 since the new driver allowed slightly higher boost clocks.