I switched from vim to spacemacs back in 2017, (before recently switching to neovim). Emacs just seemed to have far superior packages compared to vim plugins (circa 2017), and with EViL mode honestly emacs just seemed like a better vim than vim for my use case. The performance though was never very good, but the feature set was amazing. I agree that Magit is hands down the best way to use git that's ever been created.

With my recent switch to neovim, I'd say that neovim is a lot better than emacs for me. I used kickstart.nvim as a launching point to base my config off of, and it's incredible! Neogit is a port of magit to neovim and while it's not quite as feature complete as magit, it's close enough when combined with DiffView.nvim and gitsigns.

Lua is a game changer versus vimscript and I'd say now that the gap in packages has been narrowed greatly and you can turn neovim into a pretty equivalently powerful dev environment to Emacs, while having vastly better performance.