Litecoin is faster, monero is more private, ETH has smart contracts and there is much more altcoin with much more features, even Bitcoin Cash is faster than Bitcoin, but BTC keeps rising much faster.
Don't you think it's just because of the name?
Probably because Bitcoin has pioneered quite a while, so the increase is faster than other coins. Indeed, the development of other coins is also fast but I'm sure Bitcoin will not be replaced and still in trust by the crowd.