Everyone's entitled to their opinion, but since you mentioned the 2012 SB run let's recall Juan Castillo was not apart of that he was Eagles DC then.
*he became the Run game coordinator in 2013 and it was widely reported he was running the show as oline coach from behind the scenes.
Regardless as the Run game coordinator the team regressed significantly in Rushing in 2013.
2014 - was all kubiak
2015-2016. Back to back abysmal rushing attacks ( some could be attributed to play calling )
I'll give him credit for developing Wagner and having a hand in KO's.
*
I get what you're saying, but don't you think the bad performance in 2013 could also have been at least partly due to new pieces in the line (Birk, McKinnie, Oher all left), a basically new OC (Caldwell) and - the fact people always miss - Ray Rice having a pretty bad season? If you blame Castillo instead, and then give Kubiak all the credit in 2014, that seems kind of unfair. Seems more fair to say that the zone run scheme takes a while to get good at, and in Kubiak's year it fell into place, and then Trestman basically abandoned it so the O line and Castillo had to start over. And now they'll start over again with Mornhinweg :/
Oher was still their, and Mckinney got traded mid season to Miami. Gradkowski was very bad and didn't even know when to hike the ball, Yanda had to slap him on his arm to let him know. Also, KO missed half a season with a bad back and AQ Shipley was the LG. TE was very bad with Dallas Clark and Ed Dickson. Rice and Pierce had a combined 3 yard carry average. I agree Kubiak shouldn't get all the credit, However West and Dixion had over a 4 yard carry average so I don't think their is any starting over it is just running the ball 60% of the time and Keeping Flacco under 35 passes. Joe was 3 wins and 0 losses when throwing under 35 times last year, Mornhingweg has one year to get it right or all Coaches are gone