There are about 4.5 times the amount of coins as bitcoin for ETH so the price will always be lower per coin due to there being more of them. I do see it out beating bitcoin if bitcoin developers continue to not evolve the blockchain they will die. ETH is evolving and bettering it is a process and not that fast but it is still being done which is what any company needs to do to survive.
Bitcoin mainly holds value now because that is what everyone associates cryptos with. You say Ethereum or another coin and a much larger percent of people have no idea what your talking about.
Of course, but people are unaware of other currencies due to their life infancy. Give it time and more and more people will begin to understand cryptocurrency .