He is the Chief Justice... that carries a different set of skills and credentials. None of those other four would ever pass the procedures. They never were considered because they are not qualified. Roberts was an originalist by his testimony. By his presenting himself in the way that he did, he convinced the Senate to accept his appointment. HE promised to decide cases based only upon the Constitution and Stare Decisis. He violated his sworn oath. The other four should be impeached but there is not the will to do it. There is no will to do it with roberts. DC is corrupt and broken... nothing works as designed and satan reigns there.
LLS