Yes, you could use powerline as your bridging technology, if you prefer. But powerline doesn't work in all situations. It depends on your home wiring. Sometimes it runs very slow (using 200mbps rated powerline adapters, it might be a slow as 2-3 mbps in some cases, 12-14mbps in others). And of course, you need a PAIR of powerline adapters, one connected to your router, the other located near the TV.
[wireless router]<-- wire -->[powerline adapter #1]<-- home wiring -->[powerline adapter #2]<-- wire -->[tv]
So by all means, if you feel powerline might work better, go for it. But again, it's just a matter if it will work at all, and if it does, how well. There's no way to predict ahead of time, you just have to try it and see.
Btw, some manufacturers are now releasing 500mbps rated powerline adapters, so I would expect some improvements in performance and reliability. Also, many ppl complain about powerline adapters have shorter lifetimes than wireless devices. They tend to run hotter and usually can’t be used w/ surge protection. If you live in an area w/ unreliable power, lots of thunderstorms, etc., powerline is probably not a good choice.
As far as wireless ethernet bridges (aka, gaming adapters), it doesn’t matter if the brands differ. The bridging is based on standard wifi protocols (b/g/n), so they are just as likely to be compatible between brands as the typical USB/PCI wireless adapter installed on your PC/laptop and connected to that same router. IOW, it’s a non-issue in almost every case.