They are the defending champs, but that was last year and they were a Wild Card team and I wouldn't say they were one of the stronger Super Bowl winners in history
And the Bucs do have a very good defense, but they are not the 85 Bears. I don't look at their defense as an all time top defense like the 2003 Patriots, the Steel Curtain defense, 2013 Seahawks, etc. I don't even know if they are the best defense in the league this year or last. And Suh, JPP, and David are on the wrong side of 30 and could hit the age wall this year (although Suh has been on the decline for several years already). And maybe as world champions, they don't play with the same sense of urgency. We have seen this in the past that a team wins the Super Bowl and rests on its laurels.
But even if they are the same team they were in the playoffs, it is kinda silly to say no rookie QB is ready to face the Bucs. Sure you can say, they are odds are good that they will lose and not play well because they will be out matched. But that is far different than saying they aren't ready to play the Bucs and, in fact, it isn't impossible that could even outplay Brady in a head to head match up and their team beat the Bucs.
The Bucs are one of the two or three top teams in the NFL going into the season, but that doesn't mean they will be when the season goes along. And even if they are, I don't see them as this unstoppable juggernaut that only a season pro QB could even think to face.
And if all you are saying is Jones has no shot of beating the Bucs, I would say he has a better shot that Cam Newton if the Bucs turn the game into a shoot out.