OK GUYS.
There's a confirmed LITTLE difference between SS and FB, somewhere on CO forums.
FB has a "range-delay", whereas the delay between your cursor-click and the damage-done increases if you FB from farther.
SS doesn't have it, so it has UNIFORM cast delay.
BUT, that isn't FB's disadvantage entirely; delay of click to damage of FB at VERY CLOSE ranges is shorter than that of SS's universal delay time.
so in general, FB is more unpredictable and ultimately more fun than SS, even though probably 95% of players won't notice that

.