Aw damn. I hope they clean up their act with Revelator for you guys.
First thing to do is to check if the timing of their close-range pressure/oki loses to backdash > Pot Buster. It's a tight window for them to OS against if they haven't put thought into it.
Some other ideas: You'll want to out some thought into when to Hammer Fall > YRC their pokes and approach as well. 75 meter can get you out of most pressure as well, by YRCing the startup of Heavenly Pot Buster and reacting. Even a gamble with the gigantor overdrive can pay off against a lot of setups, as the counter hit projectile gives serious stun.
6P antiair when you have meter to not send them fullscreen, or just need a break, but, more importantly, airthrow as many air approaches as possible. His is great.
Don't forget the butt (j.D). If they charge in on the ground, jump, make them whiff underneath and flatten them.
And, of course, if they're setting up their rushdown with projectiles, you got to flick that stuff!