If they lose, I'd prefer they go down in two so as to conserve more energy for Chen Qingchen for her XD match later.
I think Chen Qingchen has to decide for herself which match she wants to win more, WD or XD, and devote more energy to it at the expense of the other. As she has never won a WD SS title, I suspect she'll choose the former.
First she drop shot, next she smashes, Chen QC is a smart player, always keeping her opponents guessing..