McAdoo, an assistant coach the past eight seasons with the Green Bay Packers, was hired to be the Giants' offensive coordinator last month.
"Well, he's obviously a disciple of Mike McCarthy," Coughlin said on Friday at the Scouting Combine. "Mike's done a good job, if you look at the people who have worked with him and then been able to advance. I like Ben because he did a superb job in terms of his preparation. He's very fundamentally sound. He started out with that aspect of it -- not necessarily starting to talk about Xs and Os, but just about fundamentals. He had some very detailed video of the way in which he teaches. The way in which he presents, the way in which he teaches, he did an outstanding job with that."
McAdoo came to Green Bay with McCarthy in 2006, serving as tight ends coach for his first six seasons before tutoring Aaron Rodgers and the other quarterbacks in 2012 and 2013.
"I don't know if anybody could be as prepared as Ben is for this opportunity," McCarthy said on Friday. "He's ready. I have great confidence in him personally and professionally, so I think he'll do a great job. The vision of a football team comes from the head coach, Tom Coughlin, and how Ben utilizes the personnel, it will be their identity. How much it looks like us I can't really answer that question."
Coughlin, who agreed to a one-year contract through the 2015 season, The Associated Press reported on Friday, was impressed not only by McAdoo's "great knowledge" of the Packers' scheme but also his knowledge of the Giants. Coughlin said the Giants' success against the Packers the past three seasons, including a win in the 2011 playoffs and wins the past two regular seasons, made it a great marriage for both sides.
"That combination was a good one for both of us in terms of attracting him and being a franchise that he very much respected and wanted to be a part of if the opportunity came his way," Coughlin said.
While the Packers are considered a West Coast offense, McCarthy never has been hesitant to push the ball downfield. That also makes McAdoo a good fit for the Giants, Coughlin said, with Eli Manning's long-ball acumen. Coughlin said he and the other offensive coaches will have input in the direction of the offense but McAdoo "will have the final say" on scheme and call the plays.
Coughlin seemed energized by the hire.
"What I like about it is that I basically, from my standpoint, have a chance to challenge myself with some new learning, which is good for me and for all of us who are a part of the offensive system" Coughlin said. "And the defense, as well, because obviously working against each other you have some new thoughts and new learning. I like that. It's stimulating. It's exciting. We're very new into the development of where we'll go and what our program will be, but it's a good time, it's an exciting time. I feel good about it."