What is up with the Tstaff proc?

[Donruss]

Same topic, another question. My AC club seemed to proc much more than my tstaff does. I have no evidence, but does anyone else find this to be the case?

I know weapons proc per minute, not by number of swings. Is this per minute different from weapon to weapon?

Any monks keep an AC / sarnak battle hammer combo ready to stun caster mobs in group situations? Or is that just a silly idea?