The problem with your post is you are using 2nd line centers and comparing their value to a 3rd line winger. Calgary is a pretty average forward group in the league. Brown would be our 5th best winger. Any of the three centers you just named would be Ottawa's best overall center.
There would be a lot to explain and I don't know what you already know or not but Connor Brown is a "
3rd liner" because he doesn't PP much and it's also not his game. He is a DEFENSIVE FORWARD who PKs and produces at Even Strenght
He scores at a 25 goals/50 pts pace while being deployed 2/3 of the time in the defensive zone matching against other teams top forwards...
Click on the link I have provided (at least the 2nd one) and compare with the names around. Connor Brown produces as much at ES as some of these 1st/2nd liners
Brown is also far from being the best Sens winger. Batherson, Tkachuk and Stutzle are all better offensively even though Stutzle is still quite raw and the other two are just 23 and 22 y/o
We're talking about a young rebuilding team here. Soon there's going to be another guy like Formenton, Greig, Sokolov or Jarventie who will be a better winger than Brown. It doesn't change the fact that this type of player is very useful and impactful. Defensive forwards who excel on the PK and still provide good scoring are very very valuable. Add the fact that he only makes 3.6 AAV and he's one of the best impact per $ player in the league.
Brown is a good defensive player. Coleman is arguably the best defensive wing in the entire NHL.
Where are the Selke votes? Brown was voted 17th last season (at 27 y/o), Coleman was voted 22nd the year before (at 28 y/o)
Also, since 2019-20 :
Coleman : 69 Pts (37 goals) in 141 GP
Brown : 88 Pts (41 goals) in 142 GP
Brown produces more while being deployed even more in the D zone and on a rebuilding team vs the Cup champs. Put Connor Brown on the Lightning and he would be seen as a ridiculously good 2-way forward
Any of the three centers you just named would be Ottawa's best overall center.
Debatable. At this very moment yes but it's just a matter of weeks/months, maybe a year or two. Josh Norris is only 22 y/o and Shane Pinto just turned 21 y/o 2 weeks ago. Unfortunately Pinto hasn't really played this season because of injuries and Norris is like every young player on the Sens, left to himself as there is no quality veteran outside of Connor Brown.