Hutson was a first round caliber player in June. Protas was a third round, at best, caliber player in June. Nothing has changed with Hutson. Protas, on the other hand, has shown improvement. I don't know what's hard to understand about that.
But even if I was to grant this argument for you or whoever else didn't think Hutson was a first round caliber player a year ago, you do realize that players who aren't first round picks tend to take longer to get viewed in the same way as first round picks by most people? If you didn't think Hutson (or literally whoever drafted outside the first round) was first round caliber in June, there's a good chance you don't think it now. That's usually how it works, at least with the NHL evaluators.
Unless something seismic happens (like say being the best defensemen at the World Juniors as an 18 year old), you probably aren't going to move up from a non-first round pick into the first round just because you put up big scoring numbers for one season in junior. There are plenty of players drafted after the first round that are playing well. How many of them do you seriously believe will have moved up into first round territory?
Here's the thing you don't seem to realize, draft slots don't work in the manner you suggest. Do you think the LA Kings are going to trade Greentree for Protas just because Protas on a random Thursday in January has a .05 better PPG? Of course not. They adjudged Protas to not be a first or second round selection (at least such that they didn't feel the need to pick him in one of those rounds). They also felt Greentree was the player they had to have at 26. Evaluations don't change that quickly, especially when the argument for one player is "well, he has a .05 better PPG on the same team" and essentially nothing else in his favor (prior seasons, how likely he is to project well to the NHL, where he was viewed for teams when it comes to the draft in June, etc.).
Is Protas potentially having a better season than some of those players you named? Yeah, maybe a few. Then again, I think you don't understand that it's not as easy as looking at the highest number in the scoring column to compare seasons. There are players that are playing at different levels you've compared, and then there are other factors like strength of team (Caps fans should know this with Parascak) that could lead one player to have higher stats than another and not necessarily be playing better. There are other factors like some players are not being picked primarily for scoring and others aren't. There are other factors like PPG is going to be an unfair measurement for players that primarily do their "scoring" through scoring goals.
Even if I grant you that he's having a better season than a few of them, you don't seem to recognize that teams don't change their minds that quickly and only regard 7 months of hockey and discard their view of the rest. Maybe Protas has moved up in the eyes of NHL evaluators, but it's probably not above the players they had as being two rounds better than him because he has a .05 better PPG this year in junior or something of that sort.