There are literally hundreds more MUs in service on the NEC than the MandE, and the amount of miles they all travel a day on the NEC probably equals miles traveled on the MandE in a year. That being said, most dewirements occur on the NEC with ALPs as well - I can't remember the last one on the Coast Line - one about a year and a half ago maybe around Navesink River Road is the last I can think of.
But the Amtrak catenary isn't so great....its old and worn out. Once they told me to "go and observe the catenary" from here to there. Okay fine - I was in a pissy mood that day for bone head dispatching so i decided to report EVERY SINGLE broken clip and hanger and other broken things that shouldn't be broken. They soon told me that my observation services were no longer needed....
Like so many other things on the NEC, thank goodness its way overbuilt.