Because Danielson didn't have a post-draft season of a player picked in the top 10 of the draft. You expect a guy to make a massive development jump from the pre-draft season to the post-draft season in juniors, that didn't at all happen. A top ten NHL pick would be expected to basically be one of the absolute best players in the WHL in that year. Danielson was #49 in WHL scoring this season. He was #22 in the pre-draft season, so he actually had a worse season this year even though he's a year older and should be stronger and more experienced and simply much better than his competitors. No way did anyone in the Wings organization expect that he'd stall out production-wise.
I mean in this thread people bring up comparisons like Larkin or Toews, guys who pulverized much better college competition in their post-draft seasons. There's a reason the conversation is leaning toward "he's going to be a good role player" because that's where the indicators point. I meane even the Larkin/Toews projections, as wishful homer thinking as they are basically betray the fact that this guy's offense isn't high level enough as neither one of those guys is an elite scorer. If he turns into a good checking line forward who gets 800+ NHL games, he wouldn't be a bust but he also wouldn't be the guy they thought they were picking at #9.
Someone said the Wings need centermen, yeah, that is 100% true, but they really need a centerman who can be top 10 in league scoring, not just a guy who's dependable on the PK and can eat minutes. I'm not writing Danielson off or anything, I'm just pointing out the obvious fact that he hasn't developed in the way he would have been expected to.