They each have their own advantages.Some old coins have a good technical team and are always under development.Make people more confident that they can succeed.
Indeed, old coins already have evidence in the movements that occur so that many old coins are well developed and many old coins are sunk.
For new coins, you can't see the future clearly, so you need a more innovative strategy to compete with old coins on the market.
that is a challenge for new coins to be able to create innovations or improvements to what is a weakness of old coins that have been accepted by the market. when a new coin can provide that I think the market will be on his side.