The times J&C gives on their site for Pro 100 are very similar to those for APX 100 in a wide selection of developers; it would probably give a good starting point to use the APX 100 times for Tmax -- which the Massive Dev Chart gives as 6.5 minutes at 1:4, EI 100, or 9.5 at 1:9, EI 125.
No, I don't think Pro 100 is rebranded APX 100, given that Agfa isn't selling sheet film to anyone else at this time; as well, I'm told by those who've tried it that Pro 100 roll film has no edge markings at all, which doesn't seem to match up with Agfa practice. Given reports of blue dye coming off in presoak or dev, it seems likely to be Eastern European in origin -- but the published times don't match either Efke or Fomapan.