JMU / Dunnkey - actually, the "Fangraphs crowd" has been saying righty groundball pitchers are systematically undervalued.
P-Cannons - one thing Wang did ridiculously well before getting hurt was suppress homers, which comes with the hard sinker. While normal pitchers can't control HR rates, guys like Wang, Lowe, and Webb could consistently turn in low home run rates due to their heavy sinkers.
I'm not saying Wang will do that again. There's justified skepticism that's reflected in his contract. Maybe there is too much optimism about him, but it's not a bad dice roll. If you have 400 innings from Lannan and Marquis, Stras and Zimmermann on the way, and a bunch of back end guys in the system, Wang (and Olsen) are the gambles you can and should make.