it seems that the revved damage ticks on the tigris sword do not count toward zealot feats when they crit and do not count towards the bleeding crit increase when you use it on a bleeding enemy not sure if this is intended but just wanted to check. they also do not seem to count towards shred but it is difficult to test that with no hit indicator for the blessing. This was tested in the psykanium with a gold t4 shred blessing tigris chainsword
They made the zealot feat useless, per usually. with the “nerf into the ground” tactic to make the class pointless. The only attack on a chainsword that counts for anything is the very first tick of damage. Anything after that does nothing.