I just saw this post after some time w/o paying attention to this thread and I need to complement it now:
In the last months I started looking for safer ways to do E.R’s stuffs, in order to play on-line and to adapt better at tournaments with weirdo tvs and video games (PS3). Then I saw the REAL reason Sako does 2 hits after the MK AK. He does it for safeness. If you do a c.LP, c(s).MP xx LK tatsu, you wont get an empty tatsu if you drop the link after the AK, you will be ok unless you are really bad at hit-confirming, and if you do the c(s)MP too early you will get a chainned jab and no tatsu at all. Its 2x safer than canceling the first move after the AK into tatsu.
I had the opportunity to meet Sako personally a few days ago here in Brazil and that was the very first question I asked him, and he confirmed it to me. Once the devs are going to make the LK tatsu to travel further, they are not only improving his combo potential, they are improving E.Ryu’s safeness as well. The guys may do some mistakes some times but they really knows the game quite deeply.