Every year D1 Baseball presents extensive reviews of all of the regionals in the tournament. One of the things they list is the probability of 1 to 10 of the favorite winning the regional. Of the ones they have previewed so far, the favorite is generally scored about a 6 to advance out of the regional. In the Fayetteville regional, Arkansas is rated a nine as far as probability to advance. They said they almost made it a 10. In the several years that I have been following D1 Baseball, I have never seen such a prohibitive favorite.
Arkansas is also listed as having the best hitter, pitcher, defense, offense, starting rotation, and bullpen.