The Asus G751JT has a better Wi-Fi standard than most laptops that have been on the market for around the same time as it. This laptop has an 802.11n WiFi standard, whereas most gaming laptops that have been on the market for around the same time as it have an 802.11a WiFi standard. In addition, this portable PC have 802.11ac and 802.11b and 802.11g WiFi standards.
An 802.11n WiFi standard is actually the best Wi-Fi standard amongst all portable PCs of this age and spec.
The worst Wi-Fi standard amongst similar types of portable PC is 802.11a.