Anything is possible, but that's certainly never, ever been stated.
The old party line was that if you had a press/m2m team that had B iq's in m2m, they were not supposed to perform as well in the base halfcourt m2m defense as an otherwise identical straight m2m team with A iq's.
Now, the extras afforded by the hcp (to's, mostly) might help outweigh the relative deficiency in m2m. But overall, that combo team should play worse halfcourt defense (fg%, fouls, etc.) than an identical straight m2m team with the A iq's.
That's how it's supposed to work. I agree with cal that's not how it's working.