spf13-vim is pure vim script. No ruby required. spf13-vim is cross platform and works well on windows. spf13-vim uses a bundle system to make easy maintenance. Git submodules lock you into a specific hash of each plugin and maintenance in keeping these up to date only increases your commit count with empty commits.

spf13-vim is built to be a base and completely customizable. This is built to be your vim config.

Lastly spf13-vim has dozens of contributors supporting a variety of plugins and languages. This seems focused on squares stack, ruby & coffeescript.

Disclaimer... I'm spf13, so a bit partial, but if you look at spf13-vim from 2 or 3 years ago it looked a lot like this... and we've learned a lot from making some mistakes present here.