I think Calbb and Son have an extremely valid point which I read to be that the CWS is not necessarily the best 8 teams and most often times it is not.
In my view, the responsibility for that lies with the NCAA, the selection procedures and committee and their efforts to be frugal with "travel." Instead of seeding 1-64 as they do in basketball, baseball is seeded geographically to a large extent and regionals set accordingly. When you do this, the US geography impacts because there are more schools and less travel in the East and more open spaces/less schools in the West.
You see this even better at DIII. To save money, the NCAA does not care about a national champion being the best team. In TX this week, the football teams ranked #3 and 8 in the nation(#1 and #2 in their region) are playing a first round playoff game...against each other, while the 6 and 8 seeds are playing. Whatever happened to 1 vs 8, 2 vs 7. Money is what happened.
Two years ago, the DIII baseball west regional had the #3, 8, 14 and 20 ranked teams while 2 other regionals had no nationally ranked clubs.
In Division I, the NCAA is not so blatant and cavalier and disguises the money issue better. With the revenue they now are getting from the CWS, it seems that DI baseball should have a true national champion based on teams being ranked 1-64 and seeded/competing accordingly. Not likely to occur soon, if ever so debates like this will continue to rage on message boards.