I would definitely go with the Cowboys. They have much more weapons, and Tampa Bay are going to have trouble with an injured Antonio Bryant and a uncertain Byron Leftwich.
10 team H2H league, standard scoring [NFL.com]
QB: A. Rogers
RB: MJD, S. Jax, J. Starks, D. Murray, M. Bush
WR: M. Wallace, B. Marshall, P. Harvin, M. Colston, L. Robinson
TE: O. Daniels, J. Gresham
K: Sebastian Janikowski