O'Reilly rose to the top in 2000 and stayed there in the 8 pm time slot.
When Murdock's liberal sons took over, they looked at O'reilly for $14M/year and Tucker at $1M/year, and accused O'reilly of sex harasment and kicked him out.
Within a year, Tucker was getting O'reilly's old ratings.

What does it all mean?
They are NOT firing Tucker.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps