Ok ... now that we are trying to get into the engineering aspect of things ... lets go this route ...
It takes an architect/engineer to desing things , like houses and such , BUT ... it takes the carpenter to make the alterations needed for the architect/engineer's design to work .

Now ... Who...
besides HAL and myself, has ACTUALLY done this TRUE comparison on the SAME hull , WITH the SAME engine ?
So ... before all you "guess'ers" start flapping ... please ... try doing .

Again , I did NOT say ... same type of designed hull ... I said SAME actual hull , SAME actual engine .