My TP Link adapters have much better speed than my WiFi, but the connection tends to hang occasionally for a second or more, which causes much bigger problems in online multiplayer than a slightly higher latency.

Tbh I'm not sure it makes much difference. Speaking mainly from using COD up to Black Ops 2 the game itself seems to level connections with pretty mixed results. This is why some matches you drop everybody with ease and others you are dead before you've even seen the other guy, then get some bullshit version of it on killcam. Just something you have to put up with when gaming online tbh, you're never going to get everyone on identical connections, doesn't stop it being incredibly frustrating at times though.

Is it any better on PC with it being dedicated servers rather than the host system on console?

TP link adapters think they are 200mps and BT Business Hub 5 Wifi, no idea what protocol wifi the ps4 uses

[Edited on 02-12-2015 by Steve]

Latency, on average, will be marginally (few ms tops) better over powerline but i doubt it'll be noticeable. Otherwise it's throughput and that depends on what standards you're using.

Which power line adapters and which router/wifi access point are we talking about?

Yep but it ethernet over power isnt a normal ethernet into switch connection, surely must be some drop somewhere over cable that isnt designed for networks

Ethernet cable for gaming, you'll have less pings = less chance of latency and being killed after you've gone round a corner. Using Cod as an example :lol:

Wifi with 4/5 bars

Or

Ethernet over power?