Here is some useless information that I discovered.
1 Bar of Oro’s SA2 is 142 pixel § long. Everything listed below is relative to SA2.
A whiff hk fills up the meter by 4p.
A blocked hk fills it up 16p while a hit hk filled it up 32p.
wk 0 / 2 / 4
wp 0 / 2 / 4
d.hk 4 / 16 / 32
hk 4 / 16 / 32
hp 4 / 16 / 32
mp 2 / /
mk 2 / /
close mk (launcher) / 13 / 20
j.back hk 4 / /
j.back hp 4 / /
fireball 0 / 2 / 4
-this move really suck if you are trying to gain meter.
hcb+p grab 2 / 12 / 18
-also not that great for meter
air chicken 10 / 16 / (40=2hit) (44=4hit) (45=5hit) (?=8hit)
- O_O . insane amount of meter. abuse it
neutral grab (always 6hit) 12p
back grab 13p
an EX special takes 64p. Even if it hits, you will gain no meter. Super also gains no meter if hit.
Even though air whiff chicken is the one of the best moves for gaining meter, it is not always the safest option. Choose which move to whiff wisely accordinly to your situation. Unlike the other SF games (A3/ST/CVS), in 3S you are more free to whiff moves.