For each playoff series I calculated ezPM for the regular season matchup between the two teams (4 games in each sample, except for MIA-PHI, which only played 3 games against each other). I then made a prediction about minutes based on recent play and the previous matchups, and calculated WARP based on the regular season ezPM sample and minutes prediction. The closer a team is to 1 WARP, the better chance they have of winning. Home court advantage is not included in the WARP calculation.
As members of the Knicks, Carmelo Anthony and Chauncey Billups only played once against Boston this year, and didn't play that well. So, for those two players, I used their season average WARP ratings, giving them the benefit of the doubt with such a small sample size. With that modification, Boston still comes out ahead in WARP 0.84 vs. 0.57. But given that these two teams have really only played once since that big trade (not counting the last game of the season, which saw all the major stars sit), you can probably throw these ratings out the window.
The City Prediction: Boston in 6