If it was just the voicemail by itself i suppose there is a tiny room for doubt. I'm sure vm's can be faked by some industrious blackmailer. But sorry, the voicemails added to Favre's responses when asked about this situation bury him - he doesn't deny the story because he knows it will just be worse for him when the nfl finds out the truth and he lied on the record.
As far as the brady item goes, you should really re-read things before you bury someone. Your post complains about florio passing off his opinion as fact. But the first words you quote from him are "I don't believe.." usually that connotes an opinion, not a settled fact. Florio was just saying he doesn't believe the story coming from the Pats - an opinion. Given that team and its coach's track record, i don't blame him.