The Asus G751JT has an 802.11n WiFi standard which is better than most notebook PCs of this age and spec. Most gaming laptops that are a similar age to it have an 802.11a WiFi standard. This notebook PC also have 802.11ac and 802.11b and 802.11g WiFi standards.
This notebook PC's Wi-Fi standard (802.11n) is actually the best Wi-Fi standard across all gaming laptops that are a similar age to the G751JT.
An 802.11a WiFi standard is the worst Wi-Fi standard across comparable types of notebook PC.