re: Somebody explain the practical differences between the various business majors.

Every marketing major enters the workforce thinking they are hot shite, only to waffle around for a while in a sort of workplace purgatory.

This is just my experience, having worked for a few major CPG companies. We'd hire a group of "Junior Marketers" and basically throw them in the Thunderdome and 1 or 2 would emerge as actually worth a shite. The rest would be let go.

For the most part, they all think they are ready to be the next major brand manager, but they have very little business sense.

Finance majors who come in looking for a finance career often do pretty well. And, if they are outgoing enough and not just number geeks, they show pretty good ability to move into sales or marketing within a few promotions.