In recent days dogecoin got manipulated, even before that with its nominal growth it was within the top 100. XRP on the other hand has undergone lawsuits, but the real-time usage keeps counting. So, these are temporary issues and growth with XRP and dogecoin is sure in the long term.
The more hotter the coins are, the quick they will burn out.
I believe that however these coins are in talks of many investors currently, the fear of losing money on it can't really be resisted by the facts that both XRP (which has a lawsuit and now SEC has started stopping access to people from using Ripple) and DOGE (which can clearly be seen to have been manipulated by Elon Musk) are both having no realistic values atm and can dump any moment if any worst news come up.