Late reply...
I'm not exactly sure how pushback is calculated but it appears to be a combination of the last few columns in the data. For the most part, the numbers are common throughout light, medium and hard attacks. Also there's a lot of width adjustment going on during the attacks.
Spoiler: Generic Rule for hard attacks (click to see content)
(http://s6.postimg.org/g5buv4iz5/close_stand_hp.png)
(http://s6.postimg.org/wa2v23bpt/close_stand_hp2.png)
- pausetime = 12, 12
- getpower = 60, 30***
- givepower = 30, 15***
Spoiler: Generic Rule for medium attacks (click to see content)
(http://s6.postimg.org/mzm5ktbm9/crouch_mp1.png)
(http://s6.postimg.org/nqevqldzl/crouch_mp2.png)
- pausetime = 10, 10
- getpower = 40, 20***
- givepower = 20, 10***
Spoiler: Generic Rule for light attacks (click to see content)
(http://s6.postimg.org/7occk7ea9/close_stand_lk.png)
(http://s6.postimg.org/ljan2o8pd/close_stand_lk2.png)
- pausetime = 8, 8
- getpower = 20, 10***
- givepower = 10, 5***
*** Also factored by damage scaling.
I'm kind of curious what kind of juggling system you are using though. SF4's is explained here:
https://www.youtube.com/watch?v=a9MR3OPzo8I