From what I've seen and experienced with dthrow, characters (or well.. only MK as far as I've seen) can DI down and air dodge on first actionable frame (kill percentage) and avoid the uncharged bdacus easily if they got the timing right. That makes sure that dthrow close to edge gives you no extra setup if they choose that option because you can't charge and read the airdodge due to the edge stopping falco's forward momentum. Or am I wrong?
Me, I got used to attack-dacus by right hand claw grip pretty early back in 2009 when practicing shiek dacus, but found out later that even though my index finger dexterity is amazing, charging bdacus with A is IMPOSSIBLE. Having index on A is too uncomfortable while mashing c-stick >_> so I eventually changed up R to attack for charge only, and that's why I'm so bad at it.
For me it's either bdacus or charged frame perfect dacus untill I take some extra time practicing the use of R. But because I got so used to pretty frame perfect dacuses, I never bothered learning bdacus untill 2013, and for a long while I couldn't do it more than with 25 % accuracy, all untill recent training. Claw grip is pretty handy apart from that scenario, though. Can link up X and Y (and A in dacus) with A, B and C-stick with 1 frame or close to 1 frame most of the time.
Text ending up bigger than intended, but something about bdacus confuses me. Like.. Here's the different bdacus situations I've touched upon in training room,with accuracy of how often I complete it:
D-throw: 70-80 %
SHL: 80-90 %
SHDL: ... 10-20 %
Full hop nair on to sv platform: 50 %
Jump offstage double laser back: 40-50 %
And by shl and shdl, I mean those who are low enough to hit mk on ground. One should have thought that shl had a similar bdacus input timing as shdl, but I seriously struggle on that one, no matter what. Is there a difference to the timing of your sh when you're supposed to start the extra inputs between the two, or do I just mess up completely by the simple extra B-input? It's kind of embarassing, but I'm STUCK at shdl -> bdacus. I gotta know or else I'm gonna rely on frame perfect dacuses again, lmao..