Rocker sweep pattern

Rocker geometry is quite complex. It has two parts, the prod side & the valve side.
While the pic shows a nice centered pattern [ sleep well at night ] it might produce less valve lift; that could be because of the rocker angle to the valve [ comparing the fulcrum pivot to the contact point n the valve tip ], the prod angle [ contact point of prod & fçrum pivot ] or both cumulatively.
A contact point that is not centered on the valve tip might produce more lift, alter the opening/closing rate. It could also affect v/guide wear.