An adaptation of a feature character like SUPERMAN will have a great deal of variance, not only in the era that it is in, but also the audience (demographics) that is desired to r-r-r-r-reach. This was a point always taken into consideration by National Comics Publications( AKA DC Comics), the Copywright owner of Superman and his friends. Therefore in the 1950's, National/DC published comic magazines such as SUPERBOY and JIMMY OLSEN to appeal to the younger kids,especially boys.And alas, they did the girl's Superman magazine, LOIS LANE.All featured Superman, but with a little different spin or, point of view, if you will.
With the appearance of LOIS & CLARK, they were sort of giving us a girl's version of the Super saga,much like the comic book LOIS LANE.But this telling was a program designed to get the female audience, without alienating the guys.
Much like the BATMAN TV of 1966-68, there was a large cross section of the viewing public who grew up with and were quite familiar with the storyline. The answer to the problem was to add plenty of humor, not of the "Camp" type of the Batman show, but some sort of resembling what has come to be known as "Screwball" comedy. The adventure story line is still there, but the humor allows a wider group of people to view the episodes.
The result was a Superman series with wide appeal that fit very well in with its time slot in history as well as ABC's programing schedule.