If you look at the chart, you see quite a bit of "room" for moving the tokens around. There are developers that I know of that can do what XTOL does or even better. There was lots of R&D room left even though there is no magic bullet that can move all 3 tokens to the highest position.

Rodinal is probably in the range of XTOL and HC-110, IDK not having done a direct comparison. It does suggest though that there are few old time developers that are really top notch and I know of modern ones that are better. If you wish to make a subjective comparison then look at XTOL vs Microdol-X or D-76. This compares films with modern and old style developers.

PE