If you look from a longer time frame perspective, the return is not all that bad.
I mentioned this other day, in another thread after Brassard was traded to Florida.
I was wondered what Ottawa eventually ended up with, after they traded Mike Zibanejad and a 2018 2nd rounder, to acquire Brassard, whom they eventually traded to Pittsburgh.
From what I can remember, they have Filip Gustavsson, Nick Moutrey, Jacob Bernard-Docker, Luke Loheit, a 2019 3rd rounder, and a 2020 3rd rounder to show for trading Mike Zibanejad and a 2018 2nd rounder for Brassard.