The MacBook Pro Early 2015 has a better Wi-Fi standard than most notebook PCs of this type and age. This portable PC has an 802.11n WiFi standard, whereas most notebook PCs that have been on the market for around the same time as it have an 802.11a WiFi standard. This notebook PC also have 802.11ac and 802.11b and 802.11g WiFi standards.
This portable PC's Wi-Fi standard (802.11n) is in fact the best Wi-Fi standard amongst all notebook PCs of a similar age and spec to the MacBook Pro Early 2015.
The worst Wi-Fi standard across similar types of portable PC is 802.11a.