The fact is that bitcoin has the largest capitalization in the cryptocurrency market, so it is the most reliable asset.
I think on paper easier to say that all the coin similar, but one line of code bad can be a huge losses and experience with bitcoin make clear that we will not have a big problem with ease. to conclude coins not really any results. their value based on the trust and use. bitcoin widely used and this is what makes bitcoin more valuable than currency crypto other. bitcoin better tested on higher volume and in-term longer time that makes bitcoin more reliable than currency crypto other.