I am really not intrigued by any of the matches on the card, to be honest.
Punk, Show, and Cena is really going to turn into a Cena and Punk WRESTLING match with the occasional jobbing for Show. With Punk's recent heel turn, there's no one really the crowd can get behind. Cena hasn't been completely over with the fans in some time, Show has basically never been over with the fans, and Punk is gaining more boo's than cheers now. My honest prediction for this match is Punk winning via disqualification because that's how the WWE treats its heels.
I think it would be cool if Rock came out, Rock-Bottomed Cena or Show when the ref wasn't looking, have Punk get the pin, to only further the chances of a Punk/Rock RR matchup. I don't see this happening, however.
Del Rio v.s. Sheamus. Again. Unless Del Rio wins, I see no point in this matchup at all. I am sick of Sheamus, so I want Del Rio to win. I can't see this matchup being entertaining at all, though.
Kane v.s. Bryan. It sucks when this sounds like the best match so far. If Orton/Kane can prove to be solid, this match should, at the very least, be good, considering Bryan's talent in the ring. I see Bryan jobbing to Kane at the end, which sucks.
Triple H and Lesnar. This doesn't do anything for me. Their feud sucks, in my opinion. They are making HHH seem just as powerful as Lesnar, when anyone with a clue would realize that Lesnar would destroy HHH in a real fight. If Cena has to play the underdog, why can't HHH? Lesnar needs to win. Plain and simple. HHH hasn't wrestled since Wrestlemania and Lesnar has had one match since retiring at WM XX. This is going to be a very sluggish match. They are probably advertising it as a "fight" because the company knows that neither competitor can "wrestle" at this point in their careers.
In addition, the most intriguing feud right now in Ziggler and Jericho isn't even booked (yet).
I thought SummerSlam was like the third biggest PPV for the WWE. I am sorry if this post seemed more like a rant, but I am really disappointed in this card. I hope that all of these matches deliver, but as a fan, I am not too optimistic.