veritasAequitas
Green Belt
If you're talking about 'out of the box', then this is correct. I run Kali on one laptop, and one of my partners has Parrot on his. Out of the box, Kali has more resources, and Parrot is more vulnerable; it took me all of 5 minutes to write a quick Bash Bunny script that gave me remote root access on his Parrot box.
That being said, 'out of the box' is a fairly 'meh' thing with Linux. My Surface Pro runs Ubuntu, and it's the one I carry most often, due to things like size. The tools I use most often (metasploit, beef, etc) are on it, and I can certainly install any other tools I need. Most of my scripting work is done on the Kali laptop, but if I need one of those scripts on the SP, it takes a couple of seconds to copy it, regardless of where I am.
I think its because parrot has a small team compared to something like backtrack/kali, i personally never found parrot all that stable.
Kali will always be my choice for pen testing and Mint for general usage, but i have been looking more and more at arch.
What exploit did you use?