Ricky, I gave you a ****ing huge wall of text over AIM about that matchup, what else do you need to know? The whole time when I was giving you advice you weren't listening at all and just kept saying "but I get *****, *****, *****" and clearly didn't listen to a god**** word I said.
Yes, Falcons DD games is good, but if all he's going to do is run away the whole time and DD, pills actually have some use. Now if he is actually approaching you with aerials and stuff, you're best bet is try to and beat it out or just gtfo of the way, pills are useless there. As for what moves doc has that outprioritize anyone, you're looking at like dair/bair/utilt/ftilt/nair (but only oos for nair).
And also, definitely NOT Roy = Doc. Roy is the perfect combo weight, gets CC *****, has the worst recovery in the game and get's CGed. I don't give a **** if you have disjointed hitbox's, once Doc gets in it's a wrap.