Went into the lab to test some things with this combo. SRK damage is affected by the depth it hits, so you want to make sure to juggle the opponent as low to the ground as possible.
I've been seeing a lot of EX air Tatsu, H.SRK (1 hit) xx V-Trigger, L.SRK, H.SRK. However, if you have no meter the optimal is: EX Tatsu, H.SRK (2 hits) xx V-Trigger, H.SRK. The damage difference is 5 points. If you do have meter however, the optimal is EX air Tatsu, H.SRK (1 hit) xx V-Trigger, L.SRK, EX.SRK. So simple way to put it is: no meter, double heavy, with meter: light, EX.
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