With Romo Back in the Saddle, are the Cowboys Contenders Once Again?

After breaking his left clavicle on October 25, 2010 in a Monday Night Football game against the New York Giants, Romo would not play in another game during the 2010 season.  The Cowboys would go on to finish 6-10 and start Jon Kitna and Stephen McGee to finish out the season.  Both Quarterbacks underwhelmed the fan base with their on field production last year, and Miles Austin could never develop a rhythm with either QB like he had with Romo.  So, with Romo back behind center this year and calling the signals once again, are the Dallas Cowboys legitimate title contenders like they were considered in years prior?  There are certainly bright spots on offense that stand out for the Cowboys.  Dez Bryant should take a major leap forward in his sophomore season in the league and we should see many touchdown connections between he and Romo this season.  With Marion Barber now backing up Matt Forte in Chicago, Felix Jones will have an expanded workload this season.  While he is undoubtedly talented and has excellent open field speed, he has a very difficult time staying healthy.  The sky is the limit for Jones if he can stay on the field this season, but if he misses significant time throughout the season I'm not sure Tashard Choice or rookie RB Demarco Murray from Oklahoma can shoulder the load for the Dallas Cowboys offense, putting even more pressure on the back of Tony Romo.  Looking at how the Cowboys defense is shaping up, there are, once again, obvious bright spots but a few glaring weaknesses as well.  Demarcus Ware is a phenomenal player and the unquestioned leader of the Dallas D.  However, the defensive line in front of him is very young, unproven and quite suspect.  Ware could struggle to reach the QB with the ease and success that he is used to this season if the defensive line plays poorly in front of him.  With the health of Terrance Newman in question to start the season, the Cowboys secondary also has many question marks.  Are the safeties (Gerald Sensabaugh and Abram Elam) solid enough in the defensive backfield to employ a younger CB in Newman's place if need be? I'm not sold yet.  While Mike Jenkins can appear dominant at times in a season, he is quite inconsistent.  If the Cowboys defense can get pressure on the QB and Felix Jones can remain healthy for the entire season the Cowboys could certainly have a successful season, but what is the likelihood these things fall into place? I'm not ready to buy in....yet.