You are implicitly claiming that pure gaming speed is the only thing that should ever determine the pricing of a videocard, which is nonsense.
This used to matter for Titan, when it had awesome DP compute capabilities. Titan X has been neutered in that regards. There's no distinguishing feature except for 12GB vram which no credible review has shown it to be beneficial over 6 or even 4GB, because it lacks processing power to really push 4K, even in SLI it cannot run with vram crippling 8x MSAA (whether 8X MSAA is even needed at 4K is subjective).
By your assessment, pure gaming speed isn't the only thing that factors in the price.. well, Fury X is both a gaming & compute powerhouse. It's also the coolest & one of the quietest out of the box GPU, which happens to exhaust heat out your rig, thereby improving thermals for the entire system.
For someone who games at 1440p, the difference is marginal, and a tie at 4K suggests the entire package is halo worthy once the metrics are factored in.
Suddenly cool, quiet, heat exhaust rather than dumping in the case are non factors for a lot of the same people who used to repeatedly said there's value in those metrics.
I heavily criticized R290/X reference for hot & loud. I place a strong value on cool & quiet, hence I go through the effort of water cooling my rig. Fury X does it all out of the box with full warranty. My stance is consistent.
This thread has proven there's double standards. NV = halo, regardless for some. Thanks BFG10K.