Hi
BBA and BCA both are undergraduate courses if three years divided into six semesters.

1. BBA is a management course while BCA is a technical course in the field of computers.
2. The concepts of BCA are easier for students having done their 10+2 in the science subjects while for  others BBA is better.
3. Both have good career options and high packages.

Career or jobs in BBA
1. MBA
2. Bank PO
3. Accounting
4.Enterprenuer
5. HR management
6. Finance Management
7. Marketing Management
8. Tourism Management

Career or jobs after BCA
1. Graphics
2. Multimedia
3. Banks
4. Software Developement
5. Software Programming
6. Website Designer
7. BPO

Analysis
Both BCA and BBA are the best so it is extremely unfair to make a straight comment.  As both have good scope and packages. It depends on your Interest.