Well a certain percentage of every model of mobo made will have a problem or defect. If more people bought Intel mobo's you would see more problems with them also. You also have to understand that a large percentage of the users reporting problems at Newegg are not that knowledgeable and the problems they have are mostly self-inflicted.
With that said, the P6X58D Premium is a pretty good board, I haven't seen any issues posted here, or so few I can't remember the last one. I would definitely go with the Asus over the Intel.
EVGA has the best Support and RMA policy that I know of, this board supports the newest features.
Newegg.com - EVGA X58 FTW3 132-GT-E768-KR LGA 1366 SATA 6Gb/s USB 3.0 ATX Intel Motherboard