They have different utilities. Bitcoin is worthless in the realm...

They have different utilities. Bitcoin is worthless in the realm of the sandbox game and sandcoin is not one of the currencies of choice in the crypto world. Comparing apples to oranges.

Market cap here does not necessarily dictate utility. Sandcoin is useless outside the realm of the sandbox game. However, a much easier to value asset as the intrinsic value is in the game itself.

For Bitcoin, there is no way to properly explain whether 700b is undervalued or overvalued. Our guess is as good as the next persons. Sandcoin, once the sandbox is in full swing, we can easily value the worth of the game itself based on peer comparisons, revenue generation, growth, dau etc etc