Anderson provided none of these. If they played Kypreos, much less Gartner, the team would've been just as good. It's not player to player analysis. It's the basic fact that Anderson was utterly useless, just an empty spot that did nothing, except occasionally turn over the puck.
While an argument could be made that we wouldn't have won without Matteau and Noonan, no such argument can be made for Anderson. There was no grit, there was no toughness, there was no scoring. He was previously a playoff scoring specialist, but was washed up by the time he got to NY. The justification was that he'll turn it on in the playoffs, but if he didn't have the big name, Kypreos or Olczyk would've played ahead of him.