Why is replay so hard for Triplette crew?

We have reported on two instances where Jeff Triplette's crew had difficulty in getting basic information correct on replay reversals. First, in Week 5, Triplette and his crew spotted the ball 4½ yards behind where it was supposed to be. Then, last week, an overturned call should have created a

Week 5 “Official Review”: Fair-catch interference, fumbled fumbles, ‘fishy’ call

This week's "Official Review" by league vice-president of officiating, Mike Pereira, featured several interesting plays from Week 5, leading to a lot of discussion here (video, Part 1 and Part 2): As pointed out in our comments, there was a bizarre fair-catch play in the Redskins–Panthers game. Basically, the Panthers, while