Whats kinda cool with this combo is if you use bloodtotem instead and end combo with throw after ex airgrab and do bloodoffering, the totem expires right after bloodoffering.
The d2 timing is pretty much the same as the combo I found give a frame or two, possibly. But with the extra f2 it makes the combo overall more difficult to be consistent with. But the nice thing is you'll get a little more time with the totem in this one at only the cost of a percent. Pretty much depends on what ya wanna do really.
EDIT: Actually you can possibly get this to 48% with a d4 instead of a d1.
Double Edit: Nah tested it. Still 47%.