Armstrong and Moen are essentially the same. Both are good defensively, both are good on the PK, and both have enough vision and skill to be 3rd liners at best. However, they both were brought in for some sandpaper, and this year they haven't delivered in that aspect.
I have no issues in replacing one of them for someone that brings that extra edge.
With the way White seems to have been tamed as well, we're seeing all those three guys play essentially the same style. We need White to get back to his ''I don't give a crap who you iz, Ima lay the smack down on youz'' attitude. I would have liked to see him more physically involved yesterday. But he's a keeper imo.
Improvement over the other two would be great.