MantisifuFW,

I guess its hard to explain fully in words unless you can see the demo infront of you. In Bung Bu, depending on which schools you go to some movements are emphasised more than in others. I'm not familar with the "essentials set", but I know depending on which teacher you go to they may emphasise on some forms and not others. However, I tend to break mantis down in terms of the usage as opposed to the number / names of forms. Tactics are covered in Bung Bu, then you'll probably deal with close in fighting and then chasing down opponents etc....

I tend to look compare forms as the 'text books' you may use at a particular school versus other schools. You may cover different forms but essentially learn the same content - that is the important part I think.