you gave up about 5 times as much for larrsson as you did for severson. Devils never in a million years say yes to that

I dont view at that away, look what else came with Larsson as well

I don't see it that way.
Also view of Zaitsev here on capfriendly is so scewed.
He's a good D and can produce points if put it in right situation and he's shown that he can be a shutdown D as well.
I view the term on his contract as a good cost controlled contract. With all these things in mind, I don't view this as a cap dump in any scenarios.