Whenever you see a team loses the way the Cowboys lose, you put on the tape and you will see what this analysis shows. The winning offense beats the losing defense at the LOS. The Colts were running at their strength, which is they OGs. What you see is the Cowboys DTs get beat one on one allowing blockers to get on the LBs. You see every Colts player get a block on the guy he is assigned to. No one misses and assignment or gets beat. Of course if that weren't the case, the score would not have been 23-0. But remember, this is the same team that was shut out by the Jaguars just two weeks before, the same Jaguar the Cowboys pushed all over the field.
But, if you want a lesson in how to build a dynasty, watch the breakdown of the Cowboys offense against the Colts defense and compare it to the Cowboys defense against the Colts offense. The Colts clearly attacked Connor Williams and used power against him. Looney also had his worst game of the year. When Su'a-Filo went out they attacked Redmond as well and he was simply overwhelmed. The lesson is be strong up the middle on both sides of the ball, build around offensive and defensive fronts. You win a lot of game controlling the LOS.