"Bitcoin is the most popular name, when it comes to crypto currencies. I don't think Ethereum is near half popular. Bitcoin has been attacked many times, but always come back stronger.
I don't think Ethereum will surpass Bitcoin any time soon. "
Market cap wise - true, ETH is half of Bitcoin at the moment. But its USAGE (which means real popularity) is 4 times higher (number of daily transactions), and the difference keeps growing (see 2 graphs I posted above). My point is that if something is being used more, it should be valued more (in the long run, of course).