are you saying that anydvd and dvd shrink do exactly the same thing?
unless I've misunderstood your post, that is a false statement.
dvd shrink is a transcoder that will not deal with not only Sony's Arccos protection but also ripguard and whatever newer stuff we've yet to encounter.
anydvd is a fully supported piece of software that decrypts pretty much anything, but is NOT a transcoder.
comparing anydvd and dvd shrink is like comparing apples an oranges. both are good programs, but they definitely don't do the same things.