I think the timing really depends on the character. Usually you’ll have to walk back a bit before doing the ex fireball, for example, against chun if you dont walk back, she’ll wake up and the ball is too far behind her.
Then again, against something like dudley, i think he wakes up too fast for anything to be done. Same with urien, i believe. But against urien you can do something really gimmicky/sick. Do an early ex fireball after the 2 hit mp, then do a meaty jumping mk on their wakeup (on the way up during your jump). The urien blocks this, and thus moves back… into the fireball, which should hit, by which time you do a mp from the other side.
But these setups are not unblockable (either that or one easy parry is all they need), and rely on the opponent not tech rolling.
But theyre fun, and can teach some players a harsh lesson every once in a while.
But I suppose, if I do ever a close mp x chicken, I’d much rather go for a solid finisher, mostly because I’ll gain a fair bit of gauge instead of gambling away a lot.
Just don’t try anything shite like this [media=youtube]4RxchjhtfKI[/media]