Hmm, I am silly, writing this words and all.

But in seriousness, I don't have a graph to back this up. In fact I am not necessarily advocating opening all pps utg, although I do it. It may not be optimal, I am not sure. I was giving the reasons why one would open them.

Edit: Also, I think we can all agree raise or fold is better than limping small pps from utg, and my reasons are why one would raise them.