The way I understand things the engines were so powerful and installed ahead of the center of gravity(CG) that they could make the aircraft pitch 90 deg straight up around the y-axis!
If being 'over-engined' was a problem, there would have been millions of air-crashes over the past 200 years. Usually, higher powered engines are installed in aircraft to increase fuel efficiency.
The way I understand things the engines were so powerful and installed ahead of the center of gravity(CG) that they could make the aircraft pitch 90 deg straight up around the y-axis!