Trade Shields or Felix? WHIR

[shareef]

My H2H-Each Category league's counts W, CG, SV, K, ERA, and WHIP. Batting cat's are R, HR, RBI, SB, OBP, and OPS. 14-team league.
My pitchers:
SP - Matt Cain
SP - Felix Hernandez
SP - Johnny Cueto
SP - Edwin Jackson
SP - Joe Saunders
SP - James Shields
SP - Madison Bumgarner
SP - Ivan Nova
RP - Jose Valverde
RP - Casey Janssen

Wilin Rosario - C
Bryan LaHair - 1B,OF
Mike Aviles - 2B,3B,SS
Miguel Cabrera - 1B,3B
J.J. Hardy - SS
Hunter Pence – OF
Matt Joyce - OF
Josh Reddick - OF
Yoenis Cespedes - OF
Kirk Nieuwenhuis - OF
BN-Todd Frazier - 3B
BN-Dustin Ackley - 2B
BN-Gordon Beckham - 2B
DL-Ryan Howard - 1B

QUESTION: I am offered two trades by the same opponent to select from, and they are- 1)Felix Hernandez for Nelson Cruz, or 2)James Shields for Billy Butler. My offense isn't good, and I'm going to accept one. But which? An "expert" said not to accept Cruz since he's injured a lot and can't run anymore. I need your help, friends! Thank you.

[onitapgr]

Shields for Butler sounds good

[KSChris]

I like Cruz, but he's untrustworthy with that injury history. And giving up Shields is preferable to me over Felix. You'd get more wins from Shields, but Felix is the more consistent pitcher over the years. Keep Felix. Trade Shields for Butler.