FGD,
I think you are missing the point with those two statements:
The Braz has got so much power it could fly away with gear down and propeller windmilling.
I have also heard a King Air pilot say the same about his aircraft.
In the case of the EMB120, it is an aircraft that has to be able to do exactly that to meet the requirements of CAO 20.7.1B.
In the case of the B200, whilst it is not required to meet 20.7.1B, it more than likely can, surely someone has ran the numbers on this statement.
They were making a statement on the single engine performance of the aircraft.
IMHO the same can not be said for say, a PA39 or C402B, (from personal experience). i.e. A PA39 on one engine can not climb away with gear down and the failed windmilling.
I do not believe they were displaying an over confidence or arrogance in those cases, statement of opinion/fact.