Here is a link to a very interesting comparison test of many different brands including both Astronomiks:
https://www.flickr.com/photos/109613...h/28921555845/
I believe the Deep Sky filters were primarily designed to aid refractors that may be lacking in a bit in deep blue correction. You will notice that the cut off is considerably different between the two sets (380nm vs 410nm). I do find that FWHM is better in blue with these compared to the type 2c, however, the penalty is perhaps about 1/3rd longer integration.
Peter