Some of us have an easier time moving faster when being delicate isn't an issue. And the fact that you have to wait for the analog stick to reneutral after the initial backwards input also tends to slow things down, by at least one frame in theory, by more in reality
I should rephrase,
Like order of difficulty for me:
Jump backwards, bounce forwards a side special is by far the easiest.
jumping backward to bouncing forwards is really easy since your backwards drifts counts as the input for the turn around. In actuality, how long one has to reneutral the control stick until the game no longer reads a turn around input gives me some consistency issues on jumping backwards and B reversing because I often find myself moving too fast for the game
Jump foward, then bouncing backwards to do a side special to hit forward is next hardest, but not substantially harder than the last one.
Followed by Jump foward, then bouncing backwards to neutral special forwards is the hardest for the aforementioned delicacy issues.