Okay. Okay. I will say what, to this point, has been unsaid. I didn't think it needed to be said.

Given two people of equivalent stature, the MOST important factor in aerodynamics on a bike is body position. BUT . . . having the right equipment (aero bars, TT bike, recumbent, etc.) will allow a person to get into a vastly better aerodynamic body position than a conventional racing bike can. Hence, the discussion about equipment. Equipment enables body position.

But again, as I related, when my shoulders are 7cm wider than my friend's . . . with equivalent positioning . . . nothing's going to overcome that difference short of amputation. (I'm just not that committed.)