Inferior in the fact the Indians could not manufacture a Winchester 73 or a steam locomotive......absolutely.
But other than liver eating Johnson and a few others? Most whites were not on par with Indian bushcraft, tracking skills, ambushes, etc.
Being a more inferior human civilization gave Indians the leg up in low intensity conflicts especially on their own turf. But on an open battlefield with modern rapid fire weapons? It became a charge of the light brigade real fast. Western Indians did not stand a chance in open conflict. Chief Joseph tried it, and almost succeeded in escaping, but was defeated and never allowed to enter the Wallowa ever again.
What does this have to do with Bigfoot? I think Bigfoot is not smart enough to invent the longer lasting light bulb. I often think about the California miner story, in which something kept disturbing his camp and campfire each time he left camp to prospect. He finally doubled back on camp and observed a Bigfoot who was playing as if child like in the fire. Lighting twigs on fire, twirling them like sparklers, burning fingers, dropping butts and doing it all over again. Curiosity is an ape like trait which includes humans. With that said Bigfoot is not on par with the Stone Age Indians 200 years ago even technology wise. Where are they on the Ape scale? They are bipedal so they must range somewhere between a Chimp, Gorilla, Orangutan and a Human. They don't seem to have mastered fire, stone tools, or Mayan pyramids.
What they are or how smart they are I think is Something that we will never really know unless one is found or brought in.
Anything is possible, I suppose.