A win over aTm will certainly make more of a splash with the national media, although the selection commitee might look at it with about the same weight as @ OU since they probably actually watch the games. The biggest factor in their thinking might be what OU and aTm do from here on out.
Beforehand, I would have said @ OU would be the harder task. Even Wooly's teams knocked out some highly ranked teams in the Bram. However, now that we have the OU win, I think I am a little more worried about the aTm game than I would have been. I am curious to see how this team handles a little success.