It's difficult to adequately the gauge how tough the NFC East really is. The last two division winners have failed to exceed the 10 win mark. Yet the division is also home to the current Super Bowl champions, the New York Giants.

Each team has improved this offseason and will likely need more than the 9-7 mark the Giants won the division with in 2011.

Here is the key weakness that could hold each NFC East team back this season.

Dallas Cowboys: Play Calling

There's is simply no other way to explain how a team as talented as the Dallas Cowboys manages to consistently underachieve. The problem has to be play calling.

Head Coach Jason Garrett seems to have an aversion to a balanced offense. Despite having DeMarco Murray and Felix Jones in the backfield, the Cowboys finished 24th in rushing attempts.

So despite a host of playmakers on offense, the unit ranked a mediocre 15th in scoring. Similar problems existed on defense.

Blitz-happy coordinator Rob Ryan takes too many chances and the Cowboys were one of the league's worst at surrendering big plays. They also had a knack for giving up leads late in games.

Philadelphia Eagles: Protecting the Ball

An inaibility to protect the ball doomed the so-called "dream team" in 2011. The Philadelphia Eagles' multi-talented offense contrived to finish with a -14 turnover ratio.

Quarterback Michael Vick endured a season to forget, tossing 14 of the team's 25 interceptions. These costly mistakes undermined a big play defense and ultimately kept the Eagles out of the Postseason.

New York Giants: Offensive Line

The New York Giants' linebackers could just as easily have been listed here, but an ageing offensive line was arguably the team's biggest weakness during the regular season.

Behind some feeble blocking, the Giants' running game tumbled to the bottom of the NFL rankings. Players such as right tackle Kareem McKenzie appeared to have lost a step or two and free agent center David Baas failed to live up to expectations.

The G-Men added Brandon Mosley and Matt McCants in the 2012 draft and certainly need an infusion of youth along the front five.

Washington Redskins: Offensive Line

Secondary could have been listed as the Washington Redskins biggest weakness. However, they need the offensive line to perform, if rookie quarterback Robert Griffin III and their free agent wide receivers are going to be a success.

That's not good news since 2011's line has been left intact by head coach Mike Shanahan. The group surrendered 41 sacks last season and failed to adequately pave the way for a ground game that finished 25th in the NFL.

Right tackle Jammal Brown has struggled mightily during two years in D.C. and the unit is too reliant on injury-prone left guard, Kory Lichtensteiger.

The group must stay healthy if the Redskins are finally going to return to winning ways.