As most people are well aware, the Super Bowl is always held on Sundays, which matches up with the fact that most NFL games are played on Sunday. What seems to have been forgotten though is that the real reason that NFL games are scheduled for Sunday as compared to Saturday is that the NFL does not want to compete or to undercut collegiate football, and quite obviously it is better for both sporting events, that they are held on different days. However, by the time the Super Bowl is played, collegiate football is over, and for anyone that is a fight fan, such as the MMA, UFC, and premier boxing events, they recognize that these marquee events are always held on Saturdays, of which Saturday is the obvious choice, since Sunday is considered to be a day of rest for most Americans.
The NFL is a fairly conservative organization that does not like to rock the boat, whatsoever, and with nine of the ten highest TV ratings of all time in America, being the Super Bowl, the Commissioner seems to be correct in believing that having the Super Bowl on Sunday is the right move, and points out somewhat disingenuously that Saturday TV ratings from major broadcasters are traditionally lower than those of Sunday evening. However, that fact is mitigated by the understanding that the biggest movie night in America, is Saturday night, and that Saturday night is also the biggest night to go out, with the quite obvious exception, when a big event is planned for that Saturday night, in which case, most Americans plan around that big event.
Quite logically, more Super Bowl parties would be planned and of a longer duration, if the Super Bowl was on a Saturday as opposed to a Sunday. Additionally, continental America is in three time zones, of which, the eastern time zone starts three hours later than the Pacific, so the actual beginning and ending of a Super Bowl makes a difference especially to those on the East Coast because Monday, is a work day, so that those people, would be somewhat conflicted about the Super Bowl, recognizing that they have work as well as family responsibilities which must be attended to.
The reality of the situation really is, that those that run the NFL, do not know, how well or how poorly moving the Super Bowl to a Saturday would be, and while how many people watching the game is somewhat dependent upon the teams playing, for the most part, the Super Bowl is an event, that people are going to participate in regardless of what teams are playing and where they are playing at. So then, just as the NFL implements rule changes from time-to-time, the NFL should make it a point to at least vote upon moving the game to a Saturday, in which, if voted in the affirmative, then those TV ratings, as well as the feedback from the fan base, would probably prove the point as to whether Saturday is the best day for the Super Bowl or whether to keep it as it is, on Sunday.
The bottom line is that revenues do matter to the NFL, and due diligence, alone, would demand that the NFL has a Super Bowl Saturday, of which, in all probability, it would initially be the most watched TV program in American history.