Come on! Belichick's defense makes it very easy on CBs. He made Tyrone Poole look like a Pro Bowler in 2003. Otis Smith looked like a very good CB in 2001. He made Earthwind Moreland look good for a small stretch on the 2004 Super Bowl run. He allowed Troy Brown to be a playmaker as a CB with
The Belichick defense is more about the front seven pressure. When it is there, the secondary looks good. When it isn't, it doesn't. Belichick doesn't like to blitz QB, but he loves to throw different rushing schemes that throws him off balance.
Look at 2005. Samuel and the rest of the CBs were getting picked on on a regular basis. Samuel was very mediocre that year until the front seven improved with the return of Seymour and Bruschi and Vrabel shifting inside.
The fact of the matter is before this season, Samuel was competing with Eugene Wilson for a starting CB position. Hobbs was the #1 CB and the Pats experimented rotating Wilson and Samuel. Samuel was pretty average until the middle of the season and his INT came against a lot of turnover happy QBs like Rex Grossman, Jon Kitna, and Joey Harrington (they are three of the most turnover happy QBs in the league and accounted for six of Samuel's ten regular season INTs).
I think that Samuel is a decent starter who had a good second half of the season last year. Before this season, I was hoping they could find another starter and move him to nickelback. He exceeded my expectations this year (which I was very happy to see), but I still don't think he is a great CB. He still gives up the big play too frequently for my taste. He can still be picked on (Grossman was able to pick on him at times eventhough he gave up three INTs to him).
I don't get this turning Samuel into a shutdown CB though. If Samuel turned down a long term contract averaging $6 million a year around mid-October this past season, not only would people think he was crazy, but the Pats were too for giving him about $2 million a year more than he was worth.