Rikuto
P-P-P-P-P-P-POWER!
Side step feels very random to me. I try to use it in smart ways and it really doesn't work in a manner it should. Like with Hayate I do 2p so I'm at neutral, I go for a SS and get hit. Oh I'm at a slight frame disadvantage. I'm gonna risk a SS, chances are they won't throw...smack! Might just be me needing to spend more time with it though. It seems to be very situation based.
It's always situation based. If it was a "works against everything at disadvantage" option it would be overpowered as hell.
The most efficient method of using it is to kill an opponents delayed string mindgames.
If he is just before the last hit if his string and you know that neither of his "mixup" options track, stepping into an attack should beat anything he can potentially do.