Double Wide AES/EBU

Has anyone connected in Double Wide AES/EBU configuration? (2 x AES-EBU on XLR). Is there an improvement over the Single wide connection? (Regular AES-EBU Digital XLR input). I see most high end devices use the double wide configuration (Left and right Digital Signals, eg: Musical Fidelity kW DM25 Transport/DAC combo, dCS, etc..).

A (single) regular AES/EBU cable is capable of transmitting up to 192k signal rates and double wide is usually used to transmit higher rates like 192k, this is my understanding.

If a Single cable is capable why use double to achieve the same output? Does it sonically enhance the musical experience? Its very hard to imagine a double run performing any better, given the number are still the same, but IS IT any better? Any input or any first hand experience would be very much appreciated.