So, we know that they are not stacking. Is it WAI? If it is, it doesn't make a whole lot of sense to me... I mean LD is the destiny associated with fighters, a tier 6 in it not stacking with a tier 5 of kensai tree just feels odd. Also I'm fairly certain that it used to stack before the enhancement pass (not 100%) with the kensai threat expansion. Can we please get a fix or official word on it WAI?
My guess is that noone paid attention at the coding of the new enhancements to that Pulverizer is also coded as competence bonus (the description doesn't say it, but I assume that's the problem).