As you have said, that Bitcoin will always be the best crypto, it doesn't matter what happens and it doesn't matter how other altcoins can reach higher rates. Basically, there are several possibilities if the price of an altcoin is greater than Bitcoin, usually because there is a big hype and a game in it that makes the price of the altcoin soar high. But just pay attention, no matter how high it is, it definitely won't last long. Moreover, Zugacoin's price is very high, but look after it reached its peak, the coin price continued to fall. Likewise with the market cap. I personally don't know about this coin and am not interested in this type of coin. So, just be wary of this coin, and don't expect too much for this coin to rise like its ATH, that will be very difficult to do again.
That's for sure, there is no house that will stand without a solid foundation. Since the project is built on thin air, I think it will be blown down by the wind
and nevertheless I have never think on investing on it. Stable coin like Luna has never recorverd from it's dip talk more of an altcoin that realy few people knows about it. I was just curious to check if the coin still maintain it stand.