Yes, ETH should be able to replace bitcoins soon, may be next 5 years. If you see the current trends, buyers prefer using it over bitcoins.
Give me a good example of your so called trend, how do you evaluate the trend you discovered, there is no trend, there are a shit load of tokens coming out, some are good and some are really bad and you think that those tokens that is being created will push ETH above bitcoin, may be it will have a total market capital because of the sheer number of projects created by it, but that does not mean that ETH could be able to touch bitcoin's price valuations not in a million years.
There are tokens which are useless and there are many scams in the market because of these wild ICO hunt and it wont last long, the governments around the world will come up with regulations to counter this because of the amount of scams that happened with it and only legit projects should have the opportunity to collect funds and they must be monitored on their progress and if not big penalties must be imposed and that will cut short this mad ICO craze.