You are obviously some kind of genius if you are able to solve problems with generic OBDII tool with the same ease as with BMW software. For most people, including me, this is not possible or takes 10x more time than with the proper tool.
I for one have a few service calls every day from people that have spent thousands on Snap-on or other similar scanners(which are not even generic) that cannot solve problems because of the limited amount of information (and some laziness too :-))).