I don’t agree chun and bison are counterpicks. Maybe 6-4, if that. Bison can s.HK your jagkicks just as you can sweep his st.HK. He can be annoying tho if he turtles lots, but most characters should turtle against adon anyway. The worst thing about the MU is that you can’t really backdash out of stomps on wakeup, which can be shitty in the corner, and no real way to punish EX PC if blocked when safejumping, gotta hate that. Chun splits are no more or less dangerous than other neutral jumps, which just suck in general for adon, once in a while you will land behind her and she’ll still hit you yeah but other than that it’s the same.
Gief is 5-5, sweep and HK jaguar kick are good against him. Hawk is bad, because the combination of having a punish for jagkicks on hit and his priority suck. But I don’t know, nobody plays him anymore.
Boxer is a bad matchup, maybe I’m biased though, his gameplan in this MU is so fucking simple and braindead while yours has to be complicated as shit, I’m annoyed. Sometimes I feel like switching to boxer because fuck execution anymore, I’m getting too old to bother. Objectively I don’t think the matchup is even that bad, it’s just shitty to play, then you get impatient and die.
IMO Adon has no actual hard counters, a few uphill battles sure but no guile-bison shit. But he doesn’t really dominate anyone either, apart from maybe a few shit characters like gouken, and MAYBE blanka, but that could just be because the good blankas can’t learn the matchup or something.