On one end, Amare was great and effective when he got back in shape, however, he has not played for 3months?
But as well as Amare had played, it takes away from Melo's minutes where he has played his best basketball of his career....
While Amare was largely effective in high FG%, it did not translate to as many W's as when he was on the bench
Is it because of his putrid DEFENSE?
It is great to be able to have a player where you can dump the ball to and depend on for a basket but this also creates less ball movement and opportunities for role players to get in rythme, while JR Smith also had to take a back seat as well...

While Copeland has played some of his best basketball at the C position and his worse in the SF, and has shown the ability to be a top scorer on the team
He did very well defending Hibbert during the late season win streak and his ability to spread the floor/facilitate/post up/penetrate off the dribble changed the dynamic of the team with ball movement/team basketball

I personally think it just isn't wise to give Amare minutes since he has not played in such a long time to get in shape...
While I think Copeland is just a much better defender during his late stretch run, the effort was there, but Woodson did not build on his confidence instead sending him back to DNP's/ 1-3 minutes a game