Pyrocat HD & Kodak HIE sheet film?

I looked at the Massive Development chart and found there were some times for Kodak HIE sheet film in PMK. How different is PMK from Pyrocat? Is it realistic that I could use the time listedfor PMK as a starting point with Pyrocat?

Diane, I could be wrong in this, but in my limited experience with PMK, I found its development time is significantly shorter than Pyrocat-HD for the same film. I've found Pyrocat times to be closer to those of Rodinal 1:50. This is just one small data point because I never took a fancy to PMK. Someone with more PMK experience will make a more credible source.