Lance Armstrong... greatest doper there was or ever will be

EPO fuelled I reckon, push a higher gear than idea.

The other theories is merely personal choice, Armstrong push a higher RPM whether Ullrich is much lower.
the higher cadence was to stop lactic acid build up! Ferrari if i remember of the top of my head devised a way to curtail lactic, its simple & clever. Higher cadence would mean there is not so much force, on the other hand Ullrich pushed a monster gear. Ferrari was/is a Drug Doctor but a brilliant coach.