Not the same at all. Black was not interested in actually doing play by play which was his g*d damned job! Black also had a poor vocabulary which led him to develop some really annoying nicknames and terms.
Suitor's lack of personality means he has to resort to repeating himself. It's also super obvious when he's referring to his minimally prepped information. It might just be me, but also find Suitor to consistently speak from a place of cynicism, which really isn't helpful when trying to sell the game. I also find him inauthentic.
Dunigan brings enthusiasm and knowledge delivered in a hodgepodge way, but he has the personality and authenticity to pull it off.