Uhh I don't think he loses to grundy at all, he can just get around everything he does. You don't need to jump against grundy either so the AA grab becomes useless. I'll have to run that MU with you sometime, possibly online if our connection is decent. But nightwing also doesn't have too much against GA. His staff stance isn't bad once you backdash d1s and know what to punish and his normal stance isn't trouble either. He gets alot of checks with d1 and can punish most of his strings.
Lantern, I think he beats out mostly everything that he does, I played
HGTV Soapboxfan and I think arrow definitely goes even with him. Even though I backdash b13 all day. Besides the point, all of his strings that he ends in normal chaingun, you can check him with d2 because the range on it is really good.
ando1184 that was my bad putting it 6-4, was running through it quick lol. I say its 5-5