Pick almost any reason for losing, and you are likely right to some degree.
The biggest difference in the game was the defense, and Manny Diaz coaching was a difference maker. And although he has gone through cycles at other colleges, he really had a good game plan agaisnt the cajuns.
Also, I believe playing a great team like Oklahoma prepared Tech well. I think LaTech has Auburn next. And playing against the highest talent tends to make your team better.