What is differece between ANSYS workbench and ANSYS product launcher

Ansys Workbench.............................Ansys Product Launcher- APDL
1. Interface is easy.............................little clumpsy
2. Interacts easily with........................only IGES/Step file can be imported
other CAD packages.
3. Step wise solving scheme..............not in a clear orderly manner
4. Little errors such as contact...........the model should be free from error.
errors are neglected/allowed
5. If a mistake is done it can be.........no such options no possiblity of ctrl+Z
rectified easily
6. Update geometries, Boundary........it is difficult
conditions or add parameters
7. You can integrate two or more........once again it is difficult
solvers. ie. structural+thermal,
thermal+fluid etc...
8. Vast analysis capabilities,...............Analysis is limited.
wide area of applications

Overall workbench is easy for beginners to start their analysis, easy to learn. and for advanced persons its like a feast. In ansys v15 the apdl has been integrated with workbench.. Hope I cleared your doubt.....