Olympian: Most of the Rufus stuff is covered in this thread, has pretty good info about reacting to dive kicks. Just try to position yourself so that you will have favorable angle when you block: if he’s right above/slightly on the side of you and you block standing you’ll have more frames to react/evade to them, but if he gets a sharp angle and you’re crouch blocking he gets a big advantage.
Here’s some notes about his special moves:
Tornado: I really don’t have any concrete ways of dealing with this since it seems like he has advantage on block, but apparently you can ultra him inbetween the hits.
http://forums.shoryuken.com/showthread.php?t=175009&page=40
I couldn’t figure out the setup yet, so this needs more investigation.
Snake Strike: Beware of trying to cross him up after getting a spiral knockdown. If he quick recovers he can EX SS you for free.
EX Jesus: Here’s something I’ve found about EX Jesus, Rose’s c.mk is really good against it. I don’t know if it’s because the active frames are too slow to hit it or because her body is really close to the ground(probably both), but it’s really hard for Rufus to counter/stuff her with it when she throws it out.
In fact, it’s great when he’s waking up with meter. If you meaty him with c.mk he won’t hit you out of it, and you can block the rest and punish with c.fp xx drill. Even better, if you meaty from a certain distance you will block one hit, then he will fly over you allowing you to punish. It’s a good way to make him waste ex meter, and if he stops using ex jesus on wakeup you can start your own wakeup game against him.
-Gen is at his best when he’s in on you and with meter, but even though his pokes are really really good it seems hard for him to get in without jumping in. The key here is to either keep him out or let him come to you. Stay around his jump distance so you can c.hp on reaction to his jumpins and check him with f+fk and ex sparks. Don’t really try to poke him out since hands can cut through everything (but it’ll push you back a bit if he can’t FADC), plus his focus is really good: if you eat it expect a big combo. If he tries to use it in anticipation of an attack, of course use spiral to punish.
-If he does get meter and catches you with s.mk xx hands->FADC, he’ll mix in another normal or throw, or try to crossup. Be ready to break the throw or backdash on reaction, the best thing here is try to reset the distance between you two.
-if he tries to cross you up and start jumping games, don’t hesitate to focus dash out of there.
-Also, don’t jump at him if you can help it. His Mantis j.fk acts like Rufus’s j.fk in which he can juggle with super/ultra afterwards. Crossup attempts are fine.
I think he also has less health than her(900 IIRC) so you’re already good on that front. Just don’t let him rush you down and overwhelm you with shenanigans.