I think the narrative that Dallas got hosed is nonsense. It's just a pile-on campaign against Jerry.
Did anyone believe Dallas was close to a championship? I did not. They have some talent for sure, but I'm just not buying them. I think Jerry felt the same. They are a decent team now armed with 4 1st round picks (for now) and contrary to popular opinion, Jones has actually drafted quite well, particularly with early picks.
The Packers, meanwhile, need a star. I complained about this last year. Who is the Woodson, who is the White, who is even the Matthews on this defense? You were looking at McKinney and Gary. Good players, McKinney may be the best at his position, but he plays a peripheral position. Parsons is the talent they were missing.
The trade makes sense for both teams IMO. And I don't think GB is looking for Parsons to be a big run stuffer. They got him to alleviate Gary's life and get QB pressure with 4 guys. We haven't had that in years.