Smallville: Doomsday

I watched Smallville: Doomsday, then had to read a summary to make sense of it but it does make sense.

Henry James Olsen dies but his younger brother, "Jimmie" Olsen, will become a Daily Planet photographer. This is a recognized alternative fictional form of the death and resurrection myth. Henry James Olsen dies knowing that Clark was the Red-Blue Blur but not knowing "Superman."

Time Travel Issues
Superman inspired the Legion in the 31st century;
Rokk, a Legionnaire, time travels to the 21st century to visit Clark Kent before he became Superman;
Rokk returns to a 31st century in which history records that Clark died early, on a particular date, and there was no Superman;
Rokk returns to the 21st century to warn Clark and to try to change history back.

In the altered 31st century, was there:

no Legion?
no Rokk?
or a different version of Rokk who never joined a Legion and never time traveled to the 21st century?

Will Rokk get his original 31st century back or a third version?
Will he have duplicated himself by changing events?