The Asus G751JL has a better Wi-Fi standard than most gaming laptops that came out more than a year ago. This notebook PC has an 802.11n WiFi standard, whereas most gaming laptops that came out around the same time as it have an 802.11a WiFi standard. In addition, this Asus laptop have 802.11ac and 802.11b and 802.11g WiFi standards.
An 802.11n WiFi standard is in fact the best Wi-Fi standard amongst all gaming laptops that are a similar age to the G751JL.
The worst Wi-Fi standard across similar types of notebook PC is 802.11a.