One look at board will tell anyone with a bit of knowledge that it is SSI EEB. With HPTX space you get horizontal memory banks. With SSI-EEB such placement is not possible - LGA2011s are enormous!
Anyway... for a WS board I consider it pretty average. There is no hardware RAID on board for starters. WS should be treated as WS first and OC toy later. Also anyone who will buy it will be forced into liquid cooling. Top PCI-Ex slot touches mem banks which will be pain when expanding memory, replacing sticks without removing VGA/RAID controller. Hmm... I don't care about X79, as I own X58 systems. But if I had to choose between Asus and EVGA I would pick EVGA's SR-X. I heard support for RAID controllers has been improved on than particular EVGA board (EVGA boards and hardware RAID controllers aren't perfect friends...). There is more space, it offers same [limited] connectivity as Asus-WS board. There is plenty of space between memory banks and expansion slots. HPTX is not an issue as I have compatible case.
The only advantage that Asus hold over EVGA is Intel server class NIC. But if you spend $$$$ on a powerful WS then buying one card with powerful NIC(s) isn't an issue.