PyPy core dev here. If anyone is interested in helping out, either financially or with coding, we can be reached various ways. See https://pypy.org/contact.html
I wanted to put a little £ towards the project but couldn't see a place to do it.
I use PyPy regularly on an app of mine, and very often when I need to do some compute heavy load. Typically over 5x faster than CPython. It makes some stuff that takes impossibly long with CPython (nobody wants to wait 5 minutes...), to returning a response in a few seconds.
I feel like you should either put absolute numbers side by side or how much faster pypy is (instead of how much time it takes)
An easy chart to show v3.x is 10% faster than the last version would be great.
Though they use an inflated star ranking system, which doesn't reflect reality.