How many extra points do you think Tony is worth (points saved + points created), compared to Daniels? How many extra points is he worth in those 3-4 minutes?
And really, the analysis should be how many points are Tony, 2009 Daniels, and Michael Finley worth compared to 2010 Daniels, Von Wafer, and Delonte West. I'd be hard-pressed to take the first group.
According to Basketball Prospectus, Wins Above Replacement Player and the estimated winning percentage of a team made up of the player and four average teammates in 2009-2010:
Tony Allen 1.7/.507
Marquis Daniels -1.3/.349
Michael Finlay -1.1/.335
Delonte West 2.6/.505
Also:
Daniels in 2008-2009 -0.2/.411
Von Wafer in 2008/2009 0.6/.438
And for comparison, some other names:
Matt Barnes 2.6/.479
Rudy Fernandez 1.4/.469
Rasual Butler -3.5/.353
Keith Bogans -3.1/.320
Tracy McGrady 0.3/.438
Ime Udoka -0.5/.392
Brian Scalabrine -1.5/.252
Roger Mason -1.7/.360
Larry Hughes 0.8/.451
And other Celtics:
Rajon Rondo 14.8/.662
Kevin Garnett 7.7/598
Paul Pierce 6.9/.557
Jermaine O'Neal 5.3/.547
Kendrick Perkins 5.2/.535
Shquille O'Neal 3.6/.556
Ray Allen 3.1/.470
Nate Robinson 2.6/.531
Glen Davis 0.4/.441