Briefly XRP had a market capital of over $2 billion more than Ethereum, they are swinging back and forth right now pushing each other in to #2 and #3 positions.
XRP has rocketed the last few days but can it last long enough to position itself as a long term #2 to Bitcoin?
Ethereum was actually $850 couple of days ago. And ethereum is now at calm position. When the time for ethereum comes, ripple can't do nothing against ethereum. It's not gonna hard for ether to take ripple down in 2018.
I don't think ripple can maintain this in long run.