Free Step Dodge

6- Favor 5- Even 4-Non-favor
No order
6: Bass, Leon, Marie, Honoka, Lisa, Brad, Alpha-152, Nyotengu, Tina, Ein, Raidou, Naotora, Eliot, Kokoro
5: Hayate, Mai, Mila, Helena, Bayman, Christie, Zack, Leifang, Jann Lee, Ayane, Sarah, Akira, Jacky, Momiji, Pai, Phase 4, Rachel, Hitomi,
4: Kasumi, Ryu, Gen Fu,

Here's my explanation (Not that I'm some Rig expert):
6- With these 6's, there's not much they can do to really kill Rig minus maybe throw punish him, hold him to death, or really have the experience. Some of their tools to effectively kill rig's too simple where he can look only for that and go to town right after.

Only exception is with Eliot, Tina, Brad, Lisa, & Kokoro where Rig can kinda space them out with some good keep out tools (Except Lisa).

5- I feel these 5's although can't destroy Rig like the 4's, can dictate the flow of the game should Rig not be careful. I think either they have the defensive/evasive tools to make Rig have to work more to really get his game going or they're simple enough where they have an effective bread & butter to make Rig work.

4- I think these characters are a chore for Rig to handle. With Kasumi, her being all over the place can really hurt Rig. I think he'd have to live off her doing something negative, which some Kasumi's can find ways around that (GHPGuy for example).

Ryu's similar to Kasumi (Though slower & with a worse neutral) except with Ryu's counter hit game, Rig does not want to get counter hit with Ryu as he has plenty he can work with once he gets the counter hit. He also has a good BT throw which can lead to guarantees off high counter hit that Rig does not want to worry about.

Lastly with Gen Fu, I think Gen Fu's one of the few characters Rig does not want up close at all. His counter hit games also really good. Plus 4p+k's effective. Rig also loses the 6p exchange as Rig's 6p's 13 frames compared to Gen's 11. Plus Gen's backturn combo's ridiculous as well (Refer to Ozone).