I dug out a graph Gary J sent me a few years ago. He compared his airfoil, PTGrandersons, Nemesis II, Gotcha 460, and the Eppler 475. It was done in XFoil using Fast combat speeds with Rn of 1,100,000.
Gary's airfoil turned in the highest L/d ratio around 18 deg AoA. PTG's had the best performance between 5-10 deg AoG.
If you look at the top of the Cl(alpha) graph the airfoils from the top are James, PTG, Nemesi, G460, and Eppler. Of interest is the slight upward kink in the PTG graph between 5-10 deg. Roughly 10-20% more lift than the others.
Interesting side note, years ago I built a copy of Ira Keeler's plane. He used a very similar airfoil to Phil Granderson's. Very far forward high point. flat back from just behind the high point. He noted that "the faster it goes the better it flies".
Sorry for the fuzzy graph, it's the biggest I could get to fit.