Point being, the difference is negligible.
Just because the difference in weight is negligible does not mean that the difference in the overall effect is negligible. Of course, you damn well know that your logic is bullshit.
That is not why the Pats win games. Perhaps this is some preference of Tom Brady's, but obviously it doesn't REALLY make a difference.
If it makes no difference, then why do it? The fact that it was done is itself evidence of the fact that it can effect the results.
The fact that it is a preference of Brady's is, in and of itself, a change that creates an advantage. Why not just use a smaller ball? Why not use larger footballs for teams that want to? Why not make the field 100 meters? This is a game that will award or rescind touchdowns and first downs based on half an inch. The league regulates footballs, and the Patriots willfully violated those rules with the intent of gaining an advantage.
Your entire position on this seems to be based on the batshit stupid idea that cheating doesn't matter if you win in the end. You're pathetic.