Dell XPS webcams are generally really inferior to MacBook Pro webcams. https://www.youtube.com/watch?v=QgFd_w2n1es&t=193s shows a good comparison between the M1 MacBook Pro from last year and the 13" Dell XPS. The difference is night and day, even though the M1 MacBook Pro has a 720p resolution. I imagine the difference is similar with the larger 1080p webcam on the new MacBook Pros that, as mentioned in the announcement, has a larger aperture to let in more light and a larger image sensor.