It is my understanding that cat6 direct to an I-Pad can manage 10 Gbps at 180 ft max length. WIfi is not capable of generating anything close to this magnitude of speed for data transfer: the resulting latency prevalent with wifi greatly limits it’s functional control.
A comparison of a Cat6 wired I-Pad to the tactile controls of any SQ is reflected in the D-Live pro series commitment to tactile controls housed in their desks.
Lets face it, a WIFIed I-Pad used to roam a venue, to make remote sonic tweaks, is an indispensable tool for some of us: however it certainly is not a fast, reliable tool for mixing a show requiring much mixing management.
Hugh