Only one developer in this study had more than 50h of Cursor experience, including time spent using Cursor during the study. That one developer saw a 25% speed improvement.
Everyone else was an absolute Cursor beginner with barely any Cursor experience. I don't find it surprising that using tools they're unfamiliar with slows software engineers down.
I don't think this study can be used to reach any sort of conclusion on use of AI and development speed.
I noticed that people like to rank things and often want to know which thing is best so I made an app for it. It started as a little weekend project but I've been getting some positive responses so I might keep working on it.
Feel free to try it out and make some lists and upvote / downvote stuff!
It should be mostly bug-free but it's a very fresh app so it might still be rough around the edges. If it bugs out, feel free to write a comment or ping me on X / Twitter (https://x.com/@tomasz_fm).