edited scenes? oh, then dual audio idea is dropped for now (even if it was till ep20). adding silence in between or doing some editing on audio or video would be hard work.
Just to point out, I'll eleaborate on what has made me come to that conclusion:
Episode 1: 8-12 seconds have been ripped out in the English Dubbed version. I wasn't able to pin point when. (More like, didn't bother going through the same thing all over again.)
Episode 2: Certain dialogues where Joe thinks (speaks in his mind) in the subbed version are not present in the dubbed version.
Episode 3: No differences.
So on the whole, my assumption is based on 2 out of 3 episodes. If you are able to, it would be wonderful to find out that the rest of the episodes are like Ep3 and have no differences, but it is too tedious a work for me atm xD