The Brad Johnson thing is sort of big, but not for all the same reasons. I guess it's big because the bribing thing. But as far "scuffing" a ball. That's legal now (rule change). Each team can take a bit of shine off. And I'm guessing we aren't talking major gouges, since I'm not even sure what that would do. But he did bribe someone, which sounds terrible.
As far as the ball deflation. I don't know what my opinion is. Half the NFL is on roids. Not sure I care. And if there is even a minute noticeable difference, I'm sure Brady noticed (see Brees sports science). And between weather, and Gronking, and probably shrugging of the shoulders by the guy measuring 24 balls, there's a possibility (however small) that this was incidental. But dock them draft picks anyways because it will help the other 31 teams.