The key to the series to me is OU's defense compared to ULL. I would not be surprised to see OU exploit ULL's defense with some small ball. Of course, Paige is huge - good pitching almost always beats good hitting.
You've hit the nail squarely on the head, IMO. The Cajuns are capable of scoring runs in bunches when they take advantage of an opponent's pitching and/or defense. Problem is, the Sooners have no defensive weaknesses and OU has one of the best pitchers in the NCAA.
In other words, beating OU will be a much bigger challenge for ULL than beating a team like Texas A&M.