Ever ridden a recumbent? It’s really not very powerful, as you can’t use your upper body.

?? Last time I rode one I felt it more powerful as I could a) hold my body in place with my arms and b)push against my lower back. When riding on an upright bike I am limited by body weight unless I want to strain stupidly agains the bars which is inefficient.

This = you can get better power from a recumbent riding position or one where yo have something solid to push against.