To me, this is another example of another failed episode from the AD & Univ President. Technically or if you just look at some specific or isolated stats, two separate coaches from the same place probably doesn't tell you a whole lot.
Here's the deal though, this is more of a matter of public perception or PR. If you are going to select your next high profile HC hire from the exact same place as one of the program's HC hire fails from recent program history, you had better be darn sure you are hitting on target with that hire. If not, you can just about guarantee that a whole mess of people are going to draw a connection, question, and criticize the hiring move. The refrain is obvious, why that selection when there was already one example of hiring a HC from UNC-A not working at MT?
If CNM doesn't work out as early results already suggest, then this was a public perception problem that Massaro & McPhee walked right into.
MT has grown in stature. Public perception on matters such as these must be considered by those in leadership. MT might have gotten away with a similar misstep 20 or more years ago, but not now with more alumni & fans.