And all Linux distros are basically the same thing, you can pen test with any distro. The package managers and repos are what makes them unique and interesting.
I really have no idea why someone would make another pen testing distro. Kali was enough, Parrot was like reinventing the wheel. I mean any descent distro has those same tools in repo. Install them if you like, make an image of the install, use it as a pen testing distro.