It's actually 3x slower than "ethernet". No one runs 10/100 in the home anymore with ethernet, it's all gigabit. Plus, those are under ideal conditions, the vast majority of people who actually use powerline adapters report significantly slower speeds. Plus, they fluctuate much more due to various loads on the electric system such as air conditioners, refrigerators, washing machines, etc. Electric wiring is rated at 50/60Hz and is unshielded from other frequencies. It is not a good medium for data transfer. If WiFi is not viable, you are much better off with a set of MoCA adapters over powerline.