I think of it like this. Can Stirling bench Martinelli? No. Can he be a better super sub than Trossard? Can he give Arteta enough confidence to let him take off Saka for ten minutes? Yes. That’s why it’s underwhelming, I wanted us to take strides forward in the window, not stay in the same place. Stirling will be better than Nketiah and Nelson put together if Arteta uses him more than either one, but he’s not an upgrade on any of our starters.