Do you guys use Duo Lon's teleports in his neutral game at all? I've been trying to think of ways to push my DL even further but I feel like I'm running out of ideas with him, and this is pretty much the only thing I haven't experimented with.
On another note, I'm finding j.f+A more and more useful in certain matchups. It seems to be a pretty reliable air to air for those characters with the short hops and the long reaching, somewhat downward air normals that are impossible for DL to anti air normally. Examples would be Shen, Hwa, K, etc etc who can be difficult to stop from jumping in from certain distances.
One last thing, I feel like King might be one of Duo Lon's worst matchups. Normally I use a fireball with DL to cover myself and then f+B on the ground to stop fireballs while covered by my own, but against king, her fireball animation just jumps over the foot. That matchup is pretty frustrating against a good King.
I wouldn't use raw teleport, at least not very often, as it is easily punishable on reaction during recovery. EX teleport is good in blockstrings for ghetto left/right mixup if you know your opponent has slow reflexes.
You are correct. j.f+A is good against opponents who use downward anti-airs, as Duo Lon's jump attacks all pretty much aim downwards. Use it while jumping backwards to give yourself some breathing room. Careful of j.CD's though, as they'll beat you out and score the opponent a counter-hit.
Maybe because I'm both a King and Duo Lon player, I feel like the matchup isn't lopsided at all. It really depends on the tempo of the match. Both have poor reversals, but King at least has EX Trap Shot. This means King has more free reign to pressure Duo Lon, but she's definitely not as good at it as say Kyo. Be patient, block properly and find a way out. If King is attempting to zone you out, this is actually more preferable for Duo Lon. Be patient and inch your way towards mid screen. Because Duo Lon has a slightly higher jump arc than other characters, it's really easy to hop over Venom Strikes. Once you get into the sweet spot, King will be hesitant to throw out Venom Strikes thanks to the fact that your super goes under them. When you finally close the gap, hit-confirm, and post-rekkas you have a better mixup than King. Be mindful of the EX Trap Shot though and bait her into wasting meter. Without the projectile game, King's methods of approach are very risky. Be careful of the crossup j.D, but you can counter it with a properly timed/spaced c.C. Overall, I still feel the matchup is in King's favor since she can switchup playstyle mid-match, but if you're patient and read well, the difference is not by much.