what are the differences among ARM Binaries, Linux Binaries nodejs and NodeSource Node.js Distributions -

what difference among arm binaries, linux binaries nodejs download (https://nodejs.org/en/download/) , nodesource node.js , io.js binary distributions (https://github.com/nodesource/distributions). isn't arm based machines using linux? why should download nodejs https://github.com/nodesource/distributions#debian-and-ubuntu-based-distributions instead of https://nodejs.org/en/download/?