Problem is that's not really true any more.
Quick check RC+ > 120 (130) (arbitrary, but any measure should provide similar results)
2016: 2015: 2014
1B: 11 (9) - 12 (10) - 13 (6)
2B: 10 (5) - 4 (0) - 3 (3)
SS: 3 (1) - 0 (0) - 2 (1)
3B: 10 (5) - 6 (4) - 6 (4)
LF: 7 (4) - 4 (3) - 10 (7)
CF: 4 (3) - 4 (3) - 7 (6)
RF: 7 (3) - 7 (6) - 8 (6)
1B, as would be expected, is the premier hitting position
RF hits as well or better than LF, which is a surprise b/c you'd think weak armed OFs would be more common
3B is a power position, but 2B emerged last year, that may be a one year fluke
SS and C are the good field, no hit positions
Franco is 2015 is the only Phillies regular to post a RC+ > 120 the last three years
Utley, D Brown and Ruf in 2013
Ruiz in 2012
Victorino and Howard (Pence and Mayberry part-time) in 2011
Utley, Werth, Howard and Ruiz in 2010
Utley, Werth, Howard and Ibanez in 2009
Utley, Werth, Howard and Burrell in 2008
Utley, Werth, Howard, Rowand and Burrell in 2007
Utley, Howard, Burrell, Abreu (Delucci and Coste part-time) in 2006