After a couple of test conversions I can confirm that using the b_sensitivity parameter for the second pass has no effect at all. It should be removed from the second pass.
Otherwise comparing a couple of encodes using either the Fishman parameters or the GMJCZP parameters showed that generally the GMJCZP encodes had a lot less B-Frames. And these encodes also showed a very slight tendency to undersize. For the visual quality I still cannot point my fingers on any differences. Both encodes looked damn good to me.
Cheers
manolito
//EDIT//
I reuploaded a modified version of my test bench script here:
http://forum.doom9.org/showthread.ph...32#post1808832
Please redownload...