I agree the Gronk penalty was woefully inadequate, however, after Brady's ridiculous suspension last season, it's impossible to say the Pats are treated with kid gloves. The league needs a separate commish/director for just discipline, like hockey does.
To argue that subsequent penalties should not be dealt with more severely just because of a mistake on the handling of Gronk would be a bigger mistake. They f'd up, don't continue to f up just because we did before, stupid logic there.
He sure does seem to outrun his coverage an awful lot.