Why? Granted, I definitely don't think they're going in that direction, but it would be a good little power match. And since some people are soooooo convinced that Ryback is better in the ring than Goldberg (and Goldberg-Brock at WM20 was only 'bad' because they stalled and were feeling unmotivated because of the crowd to have a good match), then I think it could wind up being a pretty good match.
Though I'd rather see Taker/Brock personally.