急!EB1 extraordinary ability Petition 問題小白兔!!!

To satisfy criteria VIII: Evidence that the alien has performed in a leading or critical role for organizations or establishments that have a distinguished reputation (criterion VIII);the chairman of my dept wrote a letter to confirm that I play a critical role. He also mentioned that as a faculty member in the dept, I am paid from a grant from NIH currently. Do I need to delete this? Or this just does not matter?