"I don't understand the numbers or how to properly apply them, therefore they're stupid."
Was this necessary? I readily admit that I don't understand all of the nuances of corsi or some of the other advanced stats to be able to always talk knowledgeably about them. But I know enough to recognize when, as in the discussions I was referencing, the corsi stats aren't being applied to anything. They were used lazily as nearly the sole support for an argument being put forward for a blanket statement calling Klein "bad." So perhaps you should reserve your judgment next time.
I wasn't meaning to say Ehrhoff was bad (I think the opposite; though I would probably contend that he isn't better than Staal), but rather to point out the irony of just saying "his corsi is bad, so he's bad" without explaining what about the corsi stats (or other stats/qualities/etc) would support that position. When used alone, in my mind corsi is a crutch for a weak argument. When combined with other things, it can be convincing.
You have to compare corsi relative to the rest of the players on a guy's squad. Whenever Ehrhoff steps on the ice his team's corsi goes way up, whenever Klein steps on the ice the opposite happens.
And had this been what you said in the posts I saw, then I might be able to understand your position a bit more as it relates to Klein. But all I saw you say was "Klein is not better than his corsi." And that does not apply the stats in the same way that you did here. (Yes, I know you also explained what it is you see in Klein's game that you felt was lacking; we disagree on pieces of that line of reasoning, but that's a different discussion)
There are problems, as I'm sure you would admit, with making blanket statements that rely almost exclusively on these stats.
Ok - so Klein's team's corsi goes down when he steps on the ice. If that makes him a bad player in your eyes, would you also consider Ryan Suter, Dan Boyle, Cam Fowler, Shea Weber, Kris Letang, Oliver Ekman-Larsson, Ryan McDonagh, Slava Voynov, and Dan Girardi bad players? Last season all of their teams had corsis which went down once they stepped on the ice; some by wider margins than others. But, I'm pretty sure you would agree that these guys are some of the best defensemen in the league (in fact I think you've said this about a few of them).
Just making the point that if this is all we're relying on, the argument is pretty weak. There are other factors at play that impact a players' corsi that don't make it gospel by itself.
For instance: What quality of competition was Klein playing against? What were the quality of the teammates he was playing with? What were the quality of the respective teams each of these players played on? Especially with coaches like AV who closely manage zone starts, what were the players' zone starts like? Were they mostly starting in the offensive zone, the defensive zone, or relatively even? Hint: For nearly all of these last season, they present Klein in a bit of a more favorable light.
And as I said in the last discussion, I'm mostly just picking on Zil a bit here; I don't think he uses corsi in this manner for the most part, but I'm looking to have a discussion about the utility of the stat and tease out of him why he sees it as valuable in some situations but not others. That said, if it is too much of a tangent, I'll end it here.
EDIT: Nvm, just saw Zil's post -- feel free to ignore if you'd like.