I'm not interested in arguing the validity of this, but I don't see what you see. I think Hutton either had a bad season or has flaws that were exposed this season with greater responsibility.
In terms of analytics Gudbranson's numbers obviously suck. There's no debating that. But at the time of the trade, there were Florida fans who told us that he was good alongside Campbell (who had no trouble moving the puck) and shored up Campbell's weakness in clearing the crease.
I wish there were stats to prove this, but your Weber comment makes me think of one thing. Is it "keying in" on Weber's (in)ability to move the puck or did players avoid Weber because he has the ability to crush you or completely rub you out along the boards. That's the old school thinking / eye test of a player that is hard to play against right?
Weber...there was an article where they specifically discussed the change in strategy in the Preds series to pressure Josi and force Weber to be the puck mover. This was considered as a series changing game plan.
They weren't scared of Weber because he hits people. They were needing to reduce the effectiveness of Josi and that pairing by forcing Weber to be the guy moving the puck. His possession retention was far below that of Josi.
Hutton...all I know is his play was better without Gudbranson. He certainly struggled and is reason #1 to not assume great growth by other young players just because they are more experienced. However, those struggles with increased responsibility, and I don't disagree, were exasperated by a Gudbranson instead of alleviated. And that is very much a result of poor pro-scouting IMO.
And you're right Campbell had no trouble moving the puck...he's been a superior puck mover for some time though last year he seemed to drink from the fountain of youth a bit.