WWE Superstars that should win the WWE Championship this year.?

Hi guys, with 2013 moving very fast and John Cena, CM Punk, and The Rock all holding the WWE Championship, There are probably going to be other Superstars that will win the WWE Championship by the end of the year. So, I'm going to name 5 possibilties, and you tell me your opinion.

Ryback- The 2012 Newcomer of the year is currently feuding with John Cena. His likelyness of winning the WWE Championship soon is high. But does he have the right, let's say... look? After being a Face since returning to WWE last year, Ryback turned heel. Was this the best choice? Maybe, maybe not. But Ryback will most likely get the Title, or maybe not.

Randy Orton- The Viper Randy Orton has not held the WWE Championship since 2010, hard to believe, right? So what it seems like in 2013 is that Randy Orton should become WWE Champion again, Maybe. But, so far in 2013 Randy Orton has mostly been involved with The Sheild, Sheamus and Big Show. And hasn't been in the World title scene since returning in 2012. But one good thing about pushing Orton back into the WWE Championship is that Orton is no stanger to it, and will adjust quickly.

Jack Swagger- Swagger since returning earlier in the year has been right in the World Title scene, But with Dolph Ziggler winning the World Title, And with Ziggler being a Heel. Will probably make him the Top Heel in the World Championship division, If WWE would want to continue making Swagger a real contender, they would have to move him over to the WWE Championship picture, Which I see very possible for somebody with the upside of Swagger.

Alberto Del Rio- Del Rio turned face right when he won the World Championship, and it was a good reign, and he's had a very solid feud with Ziggler, and Swagger. But with him probably losing too Ziggler at Extreme Rules that will open up a huge oppurtunity for Del Rio to remain a face, but go after the WWE Championship instead. With, Ziggler facing other comptitors. Del Rio could easily be pushed into the WWE Championship scene as a face, maybe fueding with Ryback over the championship

Brock Lesnar- It's pretty safe too say the Brock Lesnar will be the WWE Champion again. And I think late 2013 should be the right time. He should defeat either Orton or Del Rio, then a suprise entrant should win the rumble (Undertaker, The Rock, John Cena, CM Punk) and set up the main-event at Wrestlemania 30.

Most likely some of this will not happen, I may be way off, or I may be exact. But, what are your opinions on what I have to say? Who do you believe WWE should enter into the WWE Championship picture?