X-Tol dev times with various high-speed films

I want to process various high speed films in X-tol full strength solution in one batch. I have 2 rolls of TMZ, 1 roll of Delta 3200, and 1 roll of Neopan 1600, all exposed at EI 3200. For EI 3200 Kodak gives a developing time of 13 mins @68 degrees for the T-Max and 7.5 mins at 68 degrees for the Neopan. Ilford recommends 7.5 mins @ 68 degrees for their Delta 3200 in the stock X-tol. Seems like a big variation in developing times between the T-Max and the other 2 films. Does this sound right? I would appreciate any comments.

As background, yes, this is a film comparison. I photograph dance performances under less than ideal lighting. I've used TMZ and T-Max developer with okay results. I'm testing X-Tol in combination with various films mainly as a result of information gleaned from this excellent forum.

Some of my dance photography can be seen at http://www.s2f.com/fight/

Thanks!

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