but i see that there is no more a difference if i use in brumbaer the custom profiles or if i dont use them,- as long i use a adobe generated profile
Caution with the terminology. There was no such "profile" before, which is referred to in the profile editor.
Once more: the Adobe DNG converter, eXposure as well as Brumbaer define
conversion matrixes. This has been so before, and it remains unchanged. You may call these "profiles" (they
are), but keep in eye, that there are different kinds of profiles.
The former DNG spec allowed for one or two
color conversion matrixes, which may be seen as generic profiles of the camera model, and one or two
calibration matrixes, which are meant to adjust for the specific camera copy (I have never seen any actual use of these).
The new DNG spec allows for an
additional conversion, defined through one or more set of parameters, which are called
profiles in the DNG terminology.
(And then there are ICC profiles as well, but I don't see their actual usage yet.)