#4 Goldberg only needs a good match, not a win
It's not a secret that the Super ShowDown fiasco bothered Goldberg to no end. He even went on to apologize to the fans on Twitter soon after the match was done and dusted with.
It seems like this return could be a way for Goldberg to do some damage control, so that the fans won't remember his final match as being a total disaster, down the line.
Dolph Ziggler is someone who is fully capable of getting a good match out of almost any wrestler. A 10-minute back-and-forth between Goldberg and the incredibly agile Ziggler would be an excellent way to go about this match, with The Showoff somehow managing to score a pin in the end.
If this is Goldberg's final match in WWE, his exit will always be remembered as an impressive one (contrary to the travesty that was Super ShowDown) and a win over would benefit Ziggler too. This would be a win-win situation for both Superstars.