The Toughbook 53 has a better Wi-Fi standard than most notebook PCs of a similar age and spec to it. This notebook PC has an 802.11a WiFi standard, whereas most medium processor core laptops that are a comparable age to it have an 802.11n WiFi standard. This Panasonic laptop also have an 802.11b and 802.11g WiFi standard.
An 802.11a WiFi standard is in fact the worst Wi-Fi standard amongst all laptops of a comparable type and age to the Toughbook 53.
The best Wi-Fi standard across comparable types of portable PC is 802.11n.