This is not an arithmetic pissing contest. Everything doesn't have to be the same chip size, clock speed, or price in order to be valuable for comparison purposes.
Then what are we comparing? AIB Sticker Graphics?
[H] is just showing how much better the 1080 is over the last generation top end cards.The best performance that can be had today.
The 1080 performance reduces the value of the Ti and Titan greatly because a smaller die is outperforming a larger die, especially in compute.
It's a fact that the 1080 is replacing the 980. End of discussion.