There's a Chinese saying : "Hang2 Hang2 Chu1 Zhuang4 Yuan2",
which kinda means that in every field, outstanding people
abound.
Engineering or Business, you have to find out what you have an
aptitude for. Even if one has more prospects than the other, if
you've got no flair for it, you won't be able to make good out of
holding the qualification anyways.
Lots of people make the most of whichever field they're in and as
long as you're willing to put in the hard work and strategise, you
can make the most of whichever industry you eventually find
yourself in one.
Passion also matters... which area are you more interested in -
Engineering or Business? Without passion to fire you up, you'll
just be an average worker so it wouldn't matter anyways! 
Choose wisely! 
