Electroneum is not being designed to take over anything. It is designed for a specific use and that means in that area, yes it will be better than bitcoin. Bitcoin is designed as a currency and not as much a specialized task. Also, bitcoin will be at the top for a while and will eventually be replaced by something better. Think about how phones have evolved. Anyways, electroneum is big, but will never take over bitcoin because it is not designed to do so.