Did you get you numbers on a flow bench or on the car?
I remember reading about the SB2 head. Or maybe it was the SB2.2 head. It was one of them.
Anyway, the discussion was about why the passenger front booster always started sooner than the other boosters.
IIRC, no one had an answer for it and again IIRC, they just lived with it. I asked if it did the same with a 2X4 set up and I don’t think anyone said one way or the other.
So there may be some conditions where the bigger MAB could delay booster start up but as a general rule (as in most of the time) a bigger MAB will start the mains sooner.
It appears that some think that because a bleed has a certain characteristic at high air flows it behaves the same at low air flows.
That means they are excluding pressure differentials across the bleed, booster and fuel bowl vent.