I have a few thoughts.
The video shows the Rams at home playing the Seahawks and the Rams on the road playing the Bear. The Rams blocking was significantly better at home. This is not a revelation of any kind. I think this is fundamentally whats home field advantage is. I am reading that a lot of Cowboys fans will be at this game in LA so perhaps the home field will not be as great for the Rams.
The Cowboys do not have a Hick type defensive tackle. I wish they did. Collins has been getting better, but how bad is his ankle? I love A. Woods, but he is no Hicks. The key to this game, IMO, is the pressure up the middle. If the Cowboys tackles can hold the point of attack and even get some penetration the defense will be alright. If they get blown off the ball like they did against the Colts they are in trouble.
Watching the Rams play the Seahawks reminded me of the last Cowboys-Rams game. In that game the Rams got a hat on every Cowboys player at the point of attack and gave Gurley room to run. Its the same thing the Colts were able to do. The Cowboys defenders must beat the blocks of the Rams TEs and receivers. If the Rams block like they did the last time, it will be a long day for the defense.