As well as downloadable content for CaS, that's about all the premium edition offers that the regular does not.
I've played Soul Calibur II, and from my experiences people who button-mash could beat veterans. I'm glad to see that button-mashing pretty much a horrible strategy in SCIV.
Yeah, I am watching people discuss this at GameFAQs. A lot of people are all "ARGH KILIK IS CHEAP! BUTTON MASHERS USE HIM ONLINE!" But you know what? I used Kilik for the first time today and I don't see it at all. He has good reach and is pretty fast, but masher friendly? Not at all. I don't find that any of the characters are because it takes them so long to repeat specific attacks, like if you standing around trying to bash square or triangle and nothing else, it's just not going to work for you at all.