if you want a shallow comparison. I'm a senior dev, and I hired a junior who went to a bootcamp to solve the problem of "bootstrap a react project" for me (honestly, I'm too old to figure out how to do that -- once the project is up I'm pretty productive in react). This took him about a week. I also gave him an instruction to "bootstrap a phoenix liveview" for me, and even though he's less good at elixir (which he learned on the job) than JS, he got something up and running in two days. He then later taught me how to stand up phoenix liveview, which amounted to "pointing me to the docs" and I build a phoenix liveview app from the docs (normally i have to watch a video).