The Apple MacBook Air Early 2014 has a better Wi-Fi standard than most notebook PCs of this spec and age. This portable PC has an 802.11n wi-Fi standards, whereas most notebook PCs of this type and age have an 802.11a wi-Fi standards. This Apple portable PC also have 802.11ac and 802.11b and 802.11g wi-Fi standardss.
An 802.11n wi-Fi standards is in fact the best Wi-Fi standard across all notebook PCs of a comparable age and spec to the MacBook Air Early 2014.
Across similar types of notebook PC the worst Wi-Fi standard is 802.11a.