A question in the recent spoiler stream regarding units of investiture got me thinking about this. We know that Kaladin and Szeth each are intuitively aware of Basic Lashings, that the first lashing removes your Spiritual Gravitational Connection to the planet below you, and it "falsifies" a similar Connection in the intended direction relative to the surgebinder.
The question: Are all basic lashings equal?
Does every Windrunner, Skybreaker, and any of their squires, use the same amount of stormlight to pull with the same gravitational force?
We know that allomancers have different power levels based on how far removed they are from the introduction of lerasium into their lineage (also maybe how much lerasium? unsure), and that unkeyed metalminds can alter a person's ability to access and use investiture, sometimes even granting whole new abilities.
Is there some defining characteristic, be it genetic, spiritual, or otherwise, that may alter a surgebinder's ability to use more stormlight, use stormlight more efficiently, or just have stronger (or weaker) effects?