Well, sorry if thats the effect- none of the replays prove anything- nothing can be proved unless the camera is completely parallel with the yard line where the ball is thrown.
A calculus professor tried to put something together for a definitive answer- does this mean we should have calculus done at games?
Calls are what they are, and we have to accept them. Some will be wrong, but for the most part, we end up eating crow on disputed calls more than 90% of the time.
Like it or not, the officials see the game better than we do, and are very good at what they do.