I dislike FC 3AAA, it's so weak lol. All maxis play so differently haha it's so cool.
3B puts u in a scenario similar to 3B minus the options :|
how is it different than 4B? Same guess, but less reward. Nothing from RO will give u more damage than LO BK CH.
I'll tell u why. 4B -> LO BK is UNINTERRUPTABLE on block
3B -> ANYTHING is INTERRUPTABLE on block. eg. Amy's 3A will interrupt EVERYTHING u do once she's in range (psl3 GI fails). 4B doesn't suffer from that problem. There are some others i can't remember offhand, but experience has taught me that 4B is the overall much better loop starter. If 4B irks you, use 4B -> LO A. It is safe and evasive and u can tag the K on the end for hasty ones.