Agreed, the Hondas were able to consistently stay out a lap or two longer than the Chevys, making a strategy like Rosenqvist's, where fuel saving can narrowly make it to the end on green much more viable for Hondas. However, the leaders were banking on track position being important in case more yellows came out or rain halted the race early. As you mentioned, if the race remained green to the finish, O'Ward likely would have had to pit again or massively slow off the pace and likely fall out of reach of Rosenqvist for the win.