It painted a terrible picture when you look at the results, In his conclusion he's saying things like "Right now, there's absolutely no reason you would buy four R9 Fury X cards, even for single-monitor gaming setups. "
It is yet another clueless 4 way review so don't worry too much about it.
How many people even if they do use 4 way setups would use 3 x 4k monitors anyway. AMDMatt and myself only use single 2160p monitors.
When these people do their review with the GTX 980 Ti cards at the 11520x2160p resolution the results won't be much better than the Fury X ones as 6gb is nowhere near enough for the resolution.
The TitanXs should go ok at the resolution if Tweaktown ever get around to using 4 but again it is a pointless exercise comparing them to GTX 980 Ti's or Fury Xs as the TitanXs are aimed at a different market and are not direct competitors.
Another serious error the reviewers have made is using Metro last light as the game will only support 2 way setups from both vendors lol.