As a general rule, it makes sense to defer. But in the case of the Packers, with the struggles over the years on defense, I would think I'd like to try to put it in the endzone and play from ahead.
By deferring, the Packers could be down two scores and only have 1 offensive possession. Because it would go opponent-Packers-opponent to start out.
By receiving, it goes Packers-opponent-Packers. It reduces the possibility of digging a hole early in the game.
I'd love to the know what the Packers record is in games in which it scores a TD on the first possession of the game. I'll try to dig into that later.