I posted these a couple of weeks ago, and Al suggested it might be a good idea to take another look at these at the end of April.  So, one month into the season, here is how each division has fared against the other two ('total' records are against the two other divisions only - excludes intradivision games):

                    W     L      %       
EAST
        E v W    15   18   .455       
        E v C     8    24   .250       
        TOTAL   23   42   .354       

CENTRAL               
        C v W    11   7    .611       
        C v E    24    8    .750       
        TOTAL   35   15   .700       

WEST
        W v C    7    11   .389       
        W v E    18   15   .545       
        TOTAL   25   26   .490       

And, for whatever it's worth, here's what it looks like with the worst team in each division removed (Marlins, Pirates, Padres):

                     W    L      %       
EAST
        E v W     9    8    .529
        E v C     4    16   .200
        TOTAL   13   24   .351

CENTRAL           
        C v W    9    5    .643
        C v E    16   4    .800
        TOTAL   25   9    .735

WEST           
        W v C    5     9    .357
        W v E     8     9    .471
        TOTAL   13   18   .419