I was actually impressed with Widow in IW, for the little screen time she got. She did pretty well against the likes of Proxima Midnight one-on-one, who seemed to have comparable stats to the likes of Nebula and Gamora.
She still would have lost IIRC, like she loses here, but her stock has gone up a bit IMO. Finally being able to fight a more notable opponent without getting flattened in moments.