This is pretty funny...people calling for Sonnen, who hasn't TKO'd anyone in what--3 years?--to TKO Shields, who hasn't been TKO'd in something like 7.
Neither of these guys have crushing Ground and Pound. Striking, as a whole would be a non-issue here.
What it comes down to for me are advantages: Sonnen has great takedowns, and I give him the nod there, but what is he going to do once the fight hits the ground?
Jake's submission game is outstanding, he's lightyears ahead of Sonnen. He's also got a fantastic control game--I will guarantee you we'll see Chael on his back--that Sonnen has yet to face.
I'm going with Jake winning 8 out of 10 fights. I don't see him getting the submission more than 3 or 4 times, but I think he wins a lot of decisions that have the stand-and-bang crowd demanding refunds.