Exactly.

Forget the "rated" flow numbers for carbs...... They tell you basically nothing anymore.

Look at the Venturi and throttle bore diameters for comparisons.

For example.....
Mighty Demon 850
Race Demon 1000
Race Demon RS 1025

All are 1.56 x 1.75....... Think there is a big(any??)flow difference there?

Holley-
0-9381 "850" = 1.56 x 1.75
Original HP "950" = 1.375 x 1.75
XP "950" = 1.600 x 1.75
Original HP "1000" 1.56 x 1.75

It's all marketing BS.

Between the Bigs 950 and a Q-850, I wouldn't really expect to see any on trac performance difference, unless one of them is doing a significantly better job of metering and atomizing the fuel, or gets the main circuit activated quicker so the car leaves harder.
For practical purposes, they are basically the same "size".