I find the whole noise measurement thing to be kind of contradictory, honestly. At least, in that it's measured on the deck, and not in the air. If the purpose is to ensure a measure of quiet regarding "offensive" noise levels to those on the ground on and near the field, then an airborne measurement makes a whole lot more sense than one on the ground, since it isn't usually a plane on the ground that the general public complains about as being noisy.
The electric planes as a whole are much quieter in flight, where the "offensive" noise is generated by IC aircraft, and deserve a bonus, not a penalty.

Rick