By the way, I found a Radeon Pro Duo review at PCPer
http://www.pcper.com/reviews/Graphics-Cards/AMD-Radeon-Pro-Duo-Review
The summary is quite obvious: 980Ti SLI is faster, with better frame times, cheaper and uses less power.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.