Strange bandwidth usage meter

[Laserburn]

My PS4 is downloading a game from the Playstation Network, and the bandwidth meter shows somewhat symmetrical upstream and downstream bandwidth use on the WAN. Is this a bug, or is it something deeper in the way Sony delivers game downloads?

 

[Laserburn]

Wanted to add to this, the download speeds were abysmal, so I signed up for Private Internet Access (VPN) and set up the OpenVPN client on the router. I'm on AT&T U-Verse. The speeds improved drastically, and a game that had 9 hours left to download suddenly changed to a 90-minute job.