I don't wanna get too deep into it since we've already discussed this here but the way I see it both Tkachuk and Kyrou put up similar points but one is a dominant power forward while the other is a mostly one dimensional, nonphysical player.
I very much disagree that the gap between Brady and Kyrou can be accurately described using words like 'dominant' for one with 'one-dimensional' for the other. Brady might be physically dominant (I'd push back on that a bit) but I certainly would not describe his complete NHL game or him as a player overall as dominant. I think he is just as one dimensional as Kyrou. It is a
completely different dimension, but his game is pretty far from complete.
Kyrou's speed is no less dominant than Tkachuk's physicality. It impacts the game in very different ways and both have large holes in the elements of the game that isn't their strengths. I don't think that Tkachuk's physicality positively impacts the game by a margin greater than Kyrou's speed. He pulls himself out of position chasing hits all the time. He's in position to intercept/interrupt passes far less than Kyrou.
Brady is a leader while Kyrou hasn't shown that kind of character up to this point. I feel he's more content to be a follower, albeit a very skilled one.
I get that Brady wears the C, but has he created a good culture in Ottawa with his leadership? Is it a sign of good leadership to get five 10 minute misconduct penalties a season? I get that a lack of team success isn't all on the leadership, but Tkachuk hasn't led the Sens to anything. That team has had major issues defending for years and he has continued to be a defensive liability. I don't think fans are particularly well suited to evaluate leadership and I think 'culture' is usually spin when discussing pro sports (good and bad). But there is a lot of talent in Ottawa's lineup and I think a lot of people would say that they have underachieved for the last few years.
All thing being equal, I'd take Brady over Kyrou. But I don't think the gap between them is all that wide and I wouldn't trade Kyrou for Brady 1 for 1 given their current contracts.