that's the problem right there, you can't safe jump Ryu. (with Dudley and a lot of characters)
respect the 3 frame reversal.
if you expect the uppercut you CAN just overhead his ass though, it'll trade with the uppercut in your favor (you get a knockdown)
basically Dudley's bad matchups fall into two groups:
Group A: charge characters
Groud B: Dhalsims
most of the other matchups are very winnable, and out of the charge chars, I think DeeJay or Claw might be the nicest to you.
Guile in no way is an easy matchup, you must be playing shitty online Guiles. If they lame and wait you can't really do shit, and his standing Fierce beats duck attempts all day.
By the way, is there a way to OS backdashes with Dudley? Cause I'm tired of fighting people that backdash and I have to guess to punish it