The Apple Macbook Pro Mid 2015 has a better Wi-Fi standard than most portable PCs that are a comparable age to it. This notebook PC has an 802.11n wi-Fi standards, whereas most similar spec portable PCs that have been around for around the same time as it have an 802.11a wi-Fi standards. This portable PC also have 802.11ac and 802.11b and 802.11g wi-Fi standardss.
This laptop's Wi-Fi standard (802.11n) is actually the best Wi-Fi standard across all laptops of a comparable age and type to the Macbook Pro Mid 2015.
The worst Wi-Fi standard across comparable types of laptop is 802.11a.