1) They live in very harsh conditions that human can not survive
2) They can live without human but human can not live without them.
so it is obvious to me who is controling who. I just laugh at those so-called human being bragging about how great they are. From the view point of evolution, the most important one is that: survive; human being is nor advanced at all.
3) The key of who is more advanced is that who is more integrated into the Nature, the envirionment. It is obvious bacteria as a whole is far more fitting the environment than human being.