See my ninja edit, I could be talking about something else ^^;. I'm a SF4 main so SFxT was something I broke in pretty quick and have labbed really hard to get optimal with, so I hope it gets a bit of ground. In Vanilla I used Yoshi/Lili or Yoshi/Sakura because of a meter neutral-ish vortex, but the meter got nerfed super hard in 2013 so I use Yoshi/Asuka now.
The idea is this: Yoshi dances around builds a bar
Yoshi does windmill TC to Asuka
If it hits I get 500 damage, another bar, and dumb oki. If it's blocked I get a DP safe 50/50 with the same result.
Asuka does a mix up for 500 more damage. If it hits I win, if not I TC into Yoshi and do it all again.
It's not the best strategy because by themselves these characters are garbage and if they guess right twice they can win pretty easily, but it's meta as fuck and gets retarded Seth amounts of perfects.