Not 100% but I thought that android asks you the first time you click on a maps/wiki etc link would you rather use browser or app and whether you want to do it once or always. I agree with you that choice is good. That is kinda why I proposed my very simplistic solution of Google offering two ways of searching. One stream which tightly integrates with the Google Ecosystem which would be a plus for many people (like myself) and another where they just give you the results without any integration.