John Abraham their best  pass rusher  Andre  Ellington their  best RB  and missed  games by  Calais  Campbell  their  best  remaining  d-lineman and  double  digit  lesser  players ,you asked..............  the  Giants  also had  massive injuries .
I  think Spags  does  a good  job at  NY  but was in way over his  head  as a  HC and FWIW  the  footnotes  won't be  relevant  as  time goes  by  that he  was  10 -38  as  a  HC  will be his enduring legacy , every one  who fails as a  HC in the  league  has  a story  as to why  he compiled a  crappy  record  at this  level  no excuses ,if  ya  can't stand the  heat,many  are  called, no country for  old men,pick  your  platitude .
So far  of the two "mistakes"  the  Rams  have  made  in  trying to replace  Martz , Linehan  has  IMO  enhanced  his  chances the  most  of  returning  to the  HC  ranks considering the  Cowboys  resurgence  but more  the collapse of the  Lions  offensive  numbers  since  he left ( I  BTW   was  highly  skeptical  about  the  Cowboys  hiring  him and  wouldn't  want  him back in any  capacity), I'd  add this  Spags  should have  declined  the  DC  position  in  Nawlins , ANOTHER   of  his  questionable  decisions ,WHAT?  was he thinking?
I  shudder to think what  Spags  record  would have  been playing in the  current  NFC  West I'd  surmise  the  3 games  he did  win would have  been  likely  losses ,IOW  he  was fortunate  to  be  10-38 instead  of  7-41 and  was  presented  with the chance  to go to the playoffs  by  beating  a team that made it  with  an  8-8  record ,ALL he  had  to do to  WIN  his  division was  go  8-8 ,let's  hear  the  excuse  for that  failure we've  beaten the injury  one  as  X  says  to death.
BTW  we  played  the  Cards in week  10 it  was Palmers  6th  start  he  had  missed games 2-5 with  a dead  arm  from a  pinched  nerve and did  not  finish that game  nor play again which  means  he  played  in 6 games , Sam played in 10 in 2011 .