If you take into account strength of schedule and average Shafer's SRS (simple rating system) and Marrone's, then compare them to 2014 SRS standings, it can give you a sense of where each falls on average
Shafer's avg rating = -.715 would be 73rd this year
Marrone's avg rating = .0025 would be 67th this year.
Shafers avg strength of schedule is 3.235 which would be 39th in the country this year
Marrone's avg strength of schedule would've been 63rd this year.
There isn't much difference between 73 and 67. One side can believe that Marrone built them from the ashes, the other side can believe that Marrone left Shafer with nothing at QB.
Both guys are totally average. They're both knuckleheads that are good at teaching college kids to hit hard and they both hurt their teams chances by being stubbornly against math.
http://www.sports-reference.com/cfb/schools/syracuse/
http://www.sports-reference.com/cfb/years/2014-standings.html