I think that etehreum is more being used than bitcoin as we are seeing so many ICO based projects that are constancy being released and that shows how much development and how much ethereum can bring the blockchain technology to various fields, and for that i think that over time etehreum will surely become a strong candidate or bitcoin, but never surpassing it because bitcoin is the first of its kind it is like gold it never loses its value and everyone and whatever happens people are always going to support it.