Who had the bigger game?

After Glen Davis' timely Game 4 the other night, it got me thinking: which game was a better performance?  Glen Davis from the other night or Leon Powe's Game 2 in the 2008 series.

As you know we've compared Leon and Glen on this blog in the past, and this just raised further debate in my mind.  Here are their stat lines from their respective nights:

Game 2 in 2008 (Celtics 108- Flakers 102):
Leon Powe 14:39 (Min) 6-7 (Fg-Fga) 9-13 (Ft-Fta) 1 (ORB) 1 (DRB) 2 (TRB) 0 (Steals) 21 (pts)
Game 4 in 2010 (Celtics 96- Flakers 89)
Glen Davis 22:29 (Min) 7-10 (Fg-Fga) 4-4 (Ft-Fta) 4 (ORB) 1 (DRB) 5 (TRB) 2 (Steals) 18 (pts)

Looking back, it was incredible Leon had 21 points in less than 15 minutes.  But remember that was a huge Celtics lead for most of the game, before Lal made a furious late comeback.  The other night, the Celts trailed by 2 going into the 4th quarter in a series they already trailed 2-1.

So who had the better game and why, Davis or Powe?