K, did some testing on post-sweep OS’s (demonstrated by vryu and peqqi and others) on the entire cast. Pretty sure the list is accurate.
Legend
OS sweep = cr.hp — dash x2 — cr.lp OS cr.HP
OS f.MK= cr.hp — dash x2 — cr.lp OS f.MK
notes: Use OS sweep to work on your oki. Use OS f.MK for hit confirm into HK (Target combo 2) for damage/stun of 190/300 or to work on mix-ups (like, instead of hit f.MK~HK, do f.MK into EX kara on mashers/blockers, or whatever). Mix-ups are inherently risky; still needs experimenting to see if useful during actual matches.
Characters that get hit only by OS sweep
Gouken
Akuma
Abel
Bison/Dictator
Fuerte
Vega/Claw
Adon
Characters that get hit only by OS f.MK
Ibuki
Makoto
Gen
Dan
Dhalsim
C. Viper
Deejay
Guy
Evil Ryu
Fei
Characters that get hit by both OS sweep and OS f.MK
Ryu
Ken
Honda
Sakura
Oni
Yun
Juri
Sagat
Cody
Hakan
Yang
Guile
Blanka
Zangief
Rufus
T. Hawk
Characters that get hit by neither OS sweep nor OS f.MK
Dudley
Seth
Chun
Balrog/Boxer
Rose
Notes:
For Dudley, Seth, and Boxer, I’d use OS f.MK. When f.MK comes out, it won’t whiff (they’ll have to block it). So you’ll be in range to continue pressure. Chun Li and Rose-- with their godlike backdashes-- are completely out of range; the f.MK whiffs. So they can backdash again to safety. Back to square 1. (There has to be an ultra2 option select that could be useful against these chicks).
Hope this helps! If you see any errors, please correct it. Also, can someone test out possible OS’s for people that can teleport on wakeup. I tried this on Vega/Claw: sweep, dash x2, c.LP OS f.HP. If Vega just stands there or blocks, c.LP, s.LP, etc comes out. If Vega backflips, f.HP comes out for a hard punish. Problem is the timing, f.HP sometimes comes out too early. Needs more testing…