Having played Noobe on multiple occasions mb b3 is the best option. He shouldn't go behind you if you hold it. Feel free to test it in the lab. Mini gun also helps a lot in the match up. I have been starter to incorporate a lot more mini guns in my game to help control space, build meter, and do chip damage. Harassing DD with mini gun works pretty well, but he does have options around that. Also if DD has meter, NEVER EVER throw air rockets, or rocket power. One ex shoulder and your right in the corner and knocked down, and that is the worst situation to be in. Also knowing how to block ES is essential, cause it's not if he gets you to the corner, it's when he gets you to the corner. Also DDs only true wake up is up venom, so everything else can be stuffed on knock down even supernova, using minigun after a knock down is a great for exploiting this and can be done at a safe enough distance where you maybe able to block up venom.