It simply means that other classes have been considered strong at a position and it did not turn out that way. The probable outcome of any draft is what I showed that it was, that you're likely to get a couple of starters and if you're lucky, you'll end up with more than that. Anyone who sees this draft as producing more than that for us is not paying attention to draft history. Could it? Yes, just like last year did, but it isn't the norm.
As far as Carroll goes, he isn't considered better than what we lost, which was my point. We want a rebuilt secondary, but we want it to be built better than the previous one. We're not on a good path to accomplish that IMO.
I will be surprised if we use both of our first two draft picks on DBs, and if we don't, we have about a 50/50 shot at best of finding a starting-caliber DB in the rest of the draft. (I could go look up the actual bust percentages again, but I don't want to ... I've posted them in previous draft threads.) That doesn't mean you don't draft them, just like the fact that you stand hardly any shot at finding a starting QB after the first round didn't mean we shouldn't have drafted Dak.