I bought dbpro about a month before DGSDK. The debugger in DBPro crashed every time I tried to run it AND I do not know basic. When DGSDK was announced, I snapped it up immediately. I am very good at VC++ and I know that the debugger works!
I think the feeling inside TheGameCreators is that DGSDK is being purchased by veteran DBPro users and not newbies like me. Therefor, the help files are a little weak and sometimes wrong, and no examples of usage. I understand that the next release of DGSDK will have an improved help file....