This was an epicly bad season for the Ravens. Some of that could have been from bad luck (injuries, bad calls, etc.) but a lot has come from lack of disciplined play (execution, penalties, focus drops, blown routes, lack of turnovers, etc.). That primarily goes to the coaching and management and the players second.
When I look at the Patriots (a team I loathe) I still see a team that overcomes major losses each season to win while managing their cap very well. Their players are not premium talent yet they always end up making key plays when they matter most. THAT is what the Ravens have NOT been able to replicate.
Good team minimize the impact of their losses. Not so with Baltimore. The Ravens were in trouble even before it lost its 4 best players; their losses only accelerated the overall failure of the season. Everyone gets a bad year. Hope they spend this off season planning like they used to. Seems like they dialed it in for 2015.