I agree with Infielddad very much. D1 teams can't compete in a short season league, let alone full season "A" ball. As Bill mentioned, every player on the pro team was a solid player to star on his college team and all 10 pitchers were the studs on their college teams. Also, the kids in "A" ball are out of college and for the most part are 22-23 years of age who were studs on their college teams when they were 19-20. They now have about 500-600 at bats or 200 innings pitched in pro ball and anyone that thinks a college team can go into a league like that and compete is dreaming.
As Fungo mentioned, the young men in pro ball don't have to go to classes anymore or study for exams. They just eat, sleep and go to the park and play. They also play 140 games as opposed to the 55-60 played in college. They play about 15 games in the spring and then another 30 in instructional ball, and after one season in pro ball, the player is much better than he was in college. As far as wood goes, I don't see a big difference in the hitters once they get a couple hundred AB's under their belt. The first summer can be hard if the player does not have much experience with wood. The other difference is that .330 is a nice solid BA in college and .270 is considered a nice solid average in the minors.