1. No Romo & Dez (imagine the Falcons minus Ryan & Julio Jones)
2. No Hardy, Gregory, Mincey, RoMac, McClain (the lack of pressure was a killer in the 2nd half)
The Falcons basically beat our 2nd team in several areas...and the defense simply got worn out. Despite the offensive deficiencies (costly penalties, lack of anything downfield, etc.)...the offense put up 28 points. Unfortunately, they couldn't do much in the 2nd half.
Another 2 reasons.....
1. The Cowboys played a good 1st half (could've been better minus the Weeden Int that turned into an ATL TD)
2. The Falcons played a better 2nd half (the lack of adjustments especially on Jones was frustrating)