This is a tribute to Green Lantern: Beware my Power. Green Lantern was able to go with the flow fairly quick and made the most out of his GL Power Ring. Oliver may be a good leader but in the end he won’t be quite strong enough to take GL down. The constructs are just too powerful and versatile to easily be overpowered like that. A gun isn’t going to do anything here. Green Lantern (Stewart) wins.