I get the point that normally a top pairing defenseman will provide more offense, but his TOI per game will be among Buffalo's top for years to come.
The teams W/L when a player is present v absent should offer an insite to the value of him.
"Buffalo has a 28-16-4 record when Samuelsson’s played and a dismal 7-15-2 record when he’s been hurt."
https://theathletic.com/4348003/2023/03/28/nhl-most-underrated-defensemen/
The Athletic has him among the most under rated NHL defensemen see above.
This may be a bad fit for the Wings, but it is a horrible trade for Buffalo.

Lmao, a 1LD signed for 7 years for almost free?

This AGM is a tragedy.

Walman, Edvinsson, Wallinder, Johansson. All LD's in Detroit's system. All these guys I'd take over Samuelsson and all these guys aren't locked into BS contracts. There's absolutely no space for him or his contract in Detroit.

He is on a great contract, but ok.