My opinion is that altcoins are still dependent with Bitcoin. We can prove that by looking at the most recent bearish market. Bitcoin's price is also dragging down the altcoin market. Altcoins are still growing and maybe in the near future, there is a huge possibility that they will take control of the market. For now, I can conclude that Bitcoin is still on top.
[I agree-bitcoin is still ahead and I hope it will always be so!]