Greetings Locutus, or should i say Jean Luc Picard? You will be approximated! Resistance is flore tile!
I'm afraid Mk 4 is the only one of the series I've never tried, so I can't give you any tips on that one (I probably need to download it myself at some point).
Assault freak, one of the things I like about soul Caliber is that it uses a hole combination of stuff, the circles from Sf, a bit of the forward forward motions of Mk, and some really interesting stuff, like sliding from one button to another. The only thing it doesn't have are the charge motions of Streetfighter, ---- hold back, then forward punch etc, well, I suppose those have sort of gone out of fashion.
There is one very weerd controller motion in Sf though. Acuma's raging deamon move in the alpha games activates differently from anything else in Sf at all! Light punch twice, forward, midium kick, fierce punch.
Well, as the raging damon is the uba move of utter doom which sucks the opponent to hell so deamons can attack them horribley, it sort of makes sense that it has a weerd motion.
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)