Powerline has much better latency (and much more consistent latency) than wifi, so it’ll give you a better experience for stuff like gaming. Depending on how exactly your house is wired and what else you have on the circuit it can have reliability problems (although if you live in a dense area wifi isn’t exactly reliable), but if your house is suitable it works very well, I used it about 5 years with no problems.
Powerline is alright if you have literally no other option but I’d take wifi instead 10/10 times unless my PC was trapped inside a Faraday cage.
Powerline has much better latency (and much more consistent latency) than wifi, so it’ll give you a better experience for stuff like gaming. Depending on how exactly your house is wired and what else you have on the circuit it can have reliability problems (although if you live in a dense area wifi isn’t exactly reliable), but if your house is suitable it works very well, I used it about 5 years with no problems.