I would gladly take Zimmermann, Kazmir, or Cueto right now over Wada, Hendricks, or Turner.
I was going to bring this up some where else but never got around to it. I think people have a skewed view of Zimmerman and Hendricks. To be fair the talk of Hendricks as the next Maddux didn't help. But there have been some on this board that suggested Hendricks was Randy Wells. I think people might now have swung to underselling Hendricks. Consider the following
Jordan Zimmerman
2009 Age 23 91.1 IP, 9.07 k/9, 2.86 BB/9, 0.99 HR/9, .332 BABIP, 4.63/3.59 ERA/FIP
2010 Age 24 31.0 IP, 7.84 k/9, 2.90 bb/9, 2.32 HR/9, .261 BABIP, 4.94/5.85 ERA/FIP
2011 Age 25 161.1 IP, 6.92 k/9, 1.73 bb/9, 0.67 HR/9, .291 BABIP, 3.18/3.16 ERA/FIP
2012 Age 26 195.2 IP, 7.04 k/9, 1.98 bb/9 0.83 HR/9, .288 BABIP, 2.94/3.51 ERA/FIP
2013 Age 27 213.1 IP, 6.79 k/9, 1.69 bb/9, 0.80 hr/9, .271 BABIP, 3.25/3.36 ERA/FIP
2014 Age 28 199.2 IP, 8.20 k/9, 1.31 bb/9 0.59 hr/9 .302 BABIP, 2.66/2.68 ERA/FIP
2015 Age 29 77.0 IP, 6.08 k/9 2.10 bb/9 0.35 HR/9, .337 BABIP, 3.74/3.04 ERA/FIP
Those give him career totals of 969.1 IP, 7.34 k/9, 1.86 bb/9, 0.77 hr/9, .295 BABIP, 3.28/3.29 ERA/FIP
Kyle Hendricks
2014 Age 24 80.1 IP, 5.27 k/9, 1.68 bb/9, 0.45 HR/9, .271 BABIP, 2.46/3.32 ERA/FIP
2015 Age 25 68.2 IP, 7.73 k/9, 1.70 bb/9, 0.92 HR/9, .299 BABIP, 3.80/3.45 ERA/FIP
Those give him career totals of 149.0 IP, 6.40 k/9, 1.69 bb/9, 0.66 HR/9, .283 BABIP, 3.08/3.38 ERA/FIP.
Now I want to be fully up front. My personal belief based on the numbers alone is that Zimmerman probably has slightly better stuff. The most Hendricks ever struck out was in A- as a 21 year old at 9.92 k/9 though it was only over 32.2 IP. A more realistic best actually happened last year in AAA where he had an 8.50 k/9 at AAA over 102.2 IP. Zimmerman bounced around a bit in the minors but had a very solid 9.4 k/9 overall compared to 7.7 overall for Hendricks.
With that said, the numbers suggest they aren't as far off as people would have you believe. If we look at this year alone Hendricks has arguably out pitched Zimmerman(in fact he beat him head to head twice). He has a better k/9 and bb/9 with a relatively similar ERA/FIP and that is after starting the year with a 5.23 ERA in April. Since May 5th Hendricks has a 3.19 ERA. Additionally, if you compare each's first 150 or so innings in the majors Hendricks is also clearly better. So, the obvious possibility of Hendricks having a similar development bump to Zimmerman is there too.
If we look at the past 10 years for pitchers who have less than 2 bb/9 you have the following names(min 600 IP to remove relievers)
Greg Maddux(4.95 k/9 1.39 bb/9)
Carlos Silva(4.04 k/9 1.49 bb/9)
Kevin Slowey(6.73 k/9 1.51 bb/9)
Roy Halladay(7.18 k/9 1.58 bb/9)
Paul Byrd(4.23 k/9 1.58 bb/9)
Carl Pavano(5.01 k/9 1.63 bb/9)
Cliff Lee(7.58 k/9 1.67 bb/9)
Bartolo Colon(6.28 k/9 1.73 bb/9)
Doug Fister(6.05 k/9 1.75 bb/9)
Dan haren(7.64 k/9 1.80 bb/9)
Mike Mussina(6.85 k/9 1.83 bb/9)
Jordan Zimmerman(7.34 k/9 1.86 bb/9)
Tommy Hunter(5.54 k/9 1.96 bb/9)
Mark Buehrle(5.10 k/9 1.97 bb/9)
Chris Carpenter(7.20 k/9 1.99 bb/9)
Hiroki Kuroda(6.73 k/9 1.99 bb/9)
I think given what Hendricks has shown thus far it's fairly safe to say he's at least a 5+ k/9 guy. That leaves you a list of Slowey, Halladay, Pavano, Lee, Colon, Fister, Haren, Mussina, Zimmerman, Hunter, Buehrle, Carpenter, and Kuroda. The worst guys on that list are almost surely Slowey(8 career fWAR) and Hunter(4 career fWAR). That being said, there's a lot of pretty interesting names on that list as comparisons. Mussina for example had a career 7.11 k/9 1.98 bb/9 0.95 hr/9 .292 BABIP 3.68/3.57 ERA/FIP. He obviously was considered a staff ace of sorts for a number of years. Carpenter and Lee might be pushing things as a comparison as they were pushing high 7+'s in k/9 in many of their good years. Mark Buehrle on the other hand is another guy who was a work horse who never k'd higher than 6.50 k/9 and never walked more than 2.38 bb/9.
Ultimately, my view on Hendricks is to hope for Doug Fister. In other words, a workhorse who is great in the regular season but perhaps more of a 4/5 on a competing team. But you shouldn't rule out the possibility of him being much more. Cliff Lee was literally a throw in piece to the Brandon Phillips/Grady Sizemore trade for Bartolo Colon. Chris Carpenter was cut by the Blue Jays and didn't have an ERA below 4 until the cards picked him up at age 29. Hendricks is probably never going to be flashy striking a ton of guys out but pitchers who throw strikes are game winners. The full list of players above had a 1263-970 record(56.6% or roughly 17 wins a season per 30 starts). And if anyone is going to get the best out of Hendricks it's almost certainly Bosio.