The Asus G750JS has an 802.11n WiFi standard which is better than most gaming laptops that are a similar age to it. Most gaming laptops that have been around for around the same time as it have an 802.11a WiFi standard. In addition, this Asus laptop have an 802.11b and 802.11g WiFi standard.
This laptop's Wi-Fi standard (802.11n) is in fact the best Wi-Fi standard across all similar spec portable PCs that have been around for a comparable time to the G750JS.
The worst Wi-Fi standard amongst comparable types of laptop is 802.11a.