There are plenty of widebody flights out of Paine Field.  Since the flights are normally not very long compared to the capabilities of the aircraft, they tend to be light and get off the ground quickly.  A delivery flight is a different proposition if it is for an airline based a long way away.  Ethiopian was taking delivery of a 787.  The flight was a direct one from Everett to Bole.  Consequently, it was fueled up well.  Still, it didn’t have much payload and I was surprised to see it get off the ground pretty quickly.  They had a long flight ahead of them.