I'm not sure why. However, Claude does seem to know better where things are and knows not to make unnecessary changes. I still need to guide it and tell it to do things differently some times, but it feels like it's a lot more effective
Personally, I also like that usually it just presents to me only one change/file at a time, so it's easier for me to review. Cursor might open several files at once, each with a tons of changes, which makes it a lot harder for me to understand quickly
Btw, I use Claude Code in a terminal pane inside VSCode, with the extension. So Claude does open a file tab with proposed changes