Pagano was Baltimore's defensive backs coach from 2008-2010 and their defensive coordinator in 2011 so he was an integral part in game planning to stop Tom Brady and the Pats. Here's Tom Brady's stats from those games.
2009 Reg. Season 258yds 1TD
2009 Playoffs 154yds 2TDs 3INTs
2010 Reg. Season 292yds 1TD 2INTs
2011 Playoffs 239yds 0TDs 2INTs
and of course last year with the Colts
2012 Reg. Season 331yds 3TDs
Needless to say these stats don't mean much except to say that Pagano has plenty of experience facing Belichek/Brady. Oddly enough all of those games were in New England. Also, the only game that Pagano's team won was in the 2009 Playoffs.