I hope XRP overtakes BTC but I think for it to happen in 2018 is a bit far fetched IMHO.
But then again, Adidas passed Nike and all it took was Kayne!
Lets not forget that Ripple went from $8B to $90B in ONE month. Bitcoin sits at $240B and is declining every single day.
I think it will happen very soon. Money is flowing in to Ripple in a extremely fast pace
thats. very calculated and logical. ripple might have the chance to remove bitcoin from the top of coinmarketcap. but some people thought ripple can over the bitcoin price. this is fun to hear.