Nova I have never said is anything more than a #2 and more suited to a #3 role, ie middle of the rotation. And in terms of BABIP, Nova's was at .281. Buchholz's from 2011 was .258. So if we're playing the luck card, it would seem that Nova had worse luck than Buchholz, even though they both played to similar ERA's and WHIP's. Buchholz does strike out more guys and they both go 6+IP per start. I actually think the comp is pretty close. But one guy is coming off a vertebral fracture and the other guy is coming off a forearm strain. I think I'd take the strain over the vertebral fracture.
Pineda is in another world and you know it. Let's compare a few things here.
Buchholz in 2011- 6.53K/9IP, 1.94K/BB, 1.29WHIP
Pineda in 2011- 9.11K/9IP, 3.15K/BB, 1.10WHIP in his rookie season.
Also, Pineda is 4 yrs younger, throws harder, and has a bigger frame. Plus, all 3 of the guys you are putting this comparison into play with threw about 170IP in their career high seasons. It just so happens that last yr was the rookie campaign for both Nova and Pineda, while Buchholz has been throwing innings all the way back into 2007.
So in short, how the hell can you say Buchholz is more of a sure thing than Nova or Pineda. Nova had a similar, albeit slightly inferior season on average due to the luck factor and the fact that Buchholz does strike out more batters than he does. But his season was MUCH better due to the fact that he was healthy the whole season. Pineda was on another planet from Buchholz.