While it isn't some amazing haul, it is still decent asset management; especially when coupled with getting rid of Pearson's contract. Historically, the Kings have always held onto depreciating players showing signs that they are heading for the cliff far too long. Very rarely do these players turn out the way Dustin Brown did.
Dealing Pearson had a little bit of risk to it, but the Kings can no longer let the fear of missing out hinder them from building a successful club. You don't have to hit a home run every time to put points on the board or win a championship.
In the end, Blake may have avoided a boat anchor to the team, sure Pearson may have a slim chance of turning it around somewhere, but it wasn't here and at least we turn it into some positive assets without the burden of his contract. I don't know how anyone can't see this as a win.