FYI everyone -
Based on preliminary testing: At the highest percent (300%), the window for a hard turned bthrow transfer is up to 3 frames depending on spacing. This changes from character to character though, and might be as low as two, but I haven't tested everyone yet. The window for a dthrow is 2 frames. That is the maximum for EVERY character frame tested. That's 1.5x easier for a bthrow compared to a dthrow.
ALSO, the spacing is MUCH more specific for a dthrow compared to bthrow. Why? The bthrow has a pivot grab involved, where the dthrow is a standing grab. Pivot grabs range buys you one more frame of window time on average. At the same time, the spacing on fthrow is also MUCH more forgiving on a fthrow compared to the dthrow. The more I test, the more I see that the buffered bthrow > fthrow is FAR superior to bthrow > dthrow.
I know the spacing thing about dthrow, I take a step before regrabbing..
I'm actually bugging EA to come up with the pictures of the spacing window for a dthrow. Based on testing, the spacing window is actually smaller than the measuring unit of an IC steps. It is specific to I THINK 4 frames of controlstick input. Which is pretty crazy to account for that and the two frame timing window at the same time.