Both Wingstop and Wendy’s have done very well during the pandemic, especially Wingstop. Wingstop’s off-premise strategies have created a juggernaut, while Wendy’s is benefiting from its “third-time-the-charm” success adding breakfast, one of the few chains doing well with the daypart. But both want to become global chains. Wingstop wants 3,000 units in the US…