This theory can help to explain the whole Rand/Asmodean confrontation in Rhuidean, when both were tapping into the Choedan Kal. The results of Sidious' formula for determining strength in the Power with the Choedan Kal show that Rand and Verin, despite their vast difference in unaided potential in the Power, come very close to being able to channel an equivalent amount. Asmodean is much closer to Rand than Verin is, so even if Rand and Asmodean were not exactly equivalent in strength at this point, they would be close enough that it really wouldn't matter who was marginally stronger. This incident does not necessarily support the idea that sa'angreal provide a reservoir of Power, instead of an exponential increase.