Can't help but doubt Garrett utilized DeMarco simply due to his status as a veteran nor 'cause they were buds. Murray proved himself more capable than Randle well before 2014 came around. I also don't subscribe to the idea that there was no difference in performance between Free and Parnell. Free was the more consistent of the two, imho. As far as Witten is concerned, there is simply nobody in our TE arsenal to realistically compare with him.
I watched all snaps by each in 2014 at least 10 times each. Obviously a veteran with about 80 starts going into the season is going to be more consistent than a guy with 1 start prior to the season; however, it's not a direct comparison in that they have different strengths and weaknesses. Parnell is much stronger and really punishes defenders. Free is more consistent but lacks strength.
Parnell had a couple of bad plays that were obvious but on the vast majority of snaps was good. For whatever reason people want to compare a backup turned started like Parnell accountable to a comparison of 100% perfection. I reality, the comparison should just be to the starter he replaced (Free) which is a far lower standard than perfection.
Murray had the same average with both Parnell starting as with Free starting within 0.1 yards/carry. The teams allowed 1.8 sacks per game with Parnell starting and 1.9 sacks per game with Free starting. It's understandable that Garrett would start a healthy Free, but once he was not 100% he should have started Parnell. Free getting re-injured could have been a disaster going into the playoffs if something had happened to Parnell. The backup was a guy signed off the street (Tony Hills).
Witten does not need to be playing 100% of the offensive snaps when they are way up on the scoreboard. Even Dez plays less then 100% of the snaps. His snaps count was often in the 85% range.
Do you also dispute that nobody stopped Romo from audibling out of run plays until 2014?
I've been very supportive of Garrett ever since he became the HC, but I think he has a bit of a weakness when it comes to some veteran players.