Catchup,
I've not entered the A vs B debate before and I am not doing so now.
But your post was a wind-up, son. Nought more.
OK... so how many 747s have been ordered by US major pax carriers in, say, the past 10 years? Haven't heard that B are calling on the majors these days re the 747Adv, either.
Let's consider the other end of the scale. JetBlue seems to be doing rather better than any major (CO poss except) - with an all-A fleet.
Retract the cranium, mate.